https://mailtrap.io

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  "markdown": "### Raphael Esch\n\nCTO\n\nEvery time I’ve thought, “it would be great if it could do this,” Mailtrap already did. It is a polished product from a team that listens. It’s exactly what we need to handle our critical B2B marketplace communications.\n\n4:19 PM – 13 Feb 2026\n\n### Khalid Hasan\n\nProduct manager\n\nBuilding simplistic things is the hardest, but Mailtrap is just simple. I just throw the documentation into Cursor and it works flawlessly. It stood out with a perfect bucket of features other services charged way more for.\n\n10:35 AM – 24 Jan 2026\n\n### Todd Merrill\n\nCTO\n\nMailtrap solved a real problem for us. It’s a stable system that provides the visibility our marketing team needs without compromising our high-security infrastructure. It was far easier to turn on than complex cloud providers — our devs are happy.\n\n1:10 PM – 16 Jan 2026\n\n### Stelyana Baleva\n\nPrincipal Analyst\n\nMailtrap has been a game changer. Switching was very quick and the UI is super fast and intuitive, it takes much less time than SendGrid. The interface is amazing, always working, and I’m not missing anything from our old tool.\n\n4:42 PM – 10 Mar 2026\n\n### Andrew Crowe\n\nChief Digital Officer\n\nPrior to Mailtrap, testing was a world of pain. Mailtrap has certainly made things a lot easier for our teams. It’s a very well thought out, stable system that does the job.\n\n10:54 AM – 5 Jan 2026\n\nI switched from Postmark to @Mailtrap for sending ~1M emails per month for my SaaS. It’s cheaper and and has a better stats design. Also, their team is very nice and helped me to improve open and bounce rates.\n\n[3:12 PM – 10 Oct 2024](https://x.com/AndreyAzimov/status/1844380424317153508)\n\nI am testing Mailtrap last weeks. You can send emails from your domain for free. They allow 1000 mails/month. It is quite ok. It can be used with good old SMTP connection or via API. https://mailtrap.io/\n\n[12:49 PM – 20 Feb 2023](https://x.com/TomR4vn/status/1627651589778419712)\n\nI’ve dreaded setting up VPS’ to work with an external SMTP but @Mailtrap made things so easy! They’ve got the code and everything that you can copy and paste!\n\n[12:35 PM – 2 Dec 2022](https://x.com/limshengming/status/1598657208639950848)\n\nJust signed up for @Mailtrap and I’m loving it. So easy to set up. Provides so much peace of mind. Ahh just love it.\n\n[7:38 PM – 13 Jan 2021](https://x.com/joshuaanderton/status/1349410404217221120)\n\nAfter all these years of web development, how have I only JUST started using @Mailtrap. I had heard about it, but never got round to using it. An awesome way of testing emails 👏\n\n[1:25 PM – 7 Nov 2020](https://x.com/mitchellfinlay/status/1325036527823572993)\n\nI love @Mailtrap. It removes all the asshole of configuring email servers in test environments. Great service! Is totally worth your money!\n\n[1:15 PM – 20 Oct 2020](https://x.com/coorasse/status/1318496092762374144)\n\nShout out to @Mailtrap, hands down the best way to handle mail sending in local/test environments.\n\n[11:43 PM – 21 May 2020](https://x.com/MisterGlass/status/1263571221020581888)\n\nOne thing we started using recently is @Mailtrap for our dev & staging environments. We were previously either turning email sending entirely off for staging or running SES + whitelist. Turns out, having a fake SMTP mailbox is great and you can test better with it.\n\n[1:32 PM – 6 Jan 2021](https://x.com/Rado_g/status/1214147850013163520)\n\nCan we all agree @Mailtrap is a gift to developers everywhere? It just works SO easily out of the box!!!!\n\n[9:45 PM – 11 Aug 2020](https://x.com/dougblackjr/status/1293257227042783232)\n",
  "fullPageMarkdown": "Mailtrap: Modern Email Delivery for dev and product teams                                                                        [Skip to Navigation](https://mailtrap.io/#screen-reader-shortcut-header)\n\n![New: ](https://mailtrap.io/wp-content/uploads/2026/01/star-illustration.svg) **New:** AI powered in-app chat support!\n\n[Learn more](https://feedback.mailtrap.io/changelog/new-capabilities-for-our-ai-assistant)\n\n# Modern Email Delivery for developer & product teams\n\nFast delivery. High inboxing rates. 24/7 expert support.\n\n[Sign Up](https://mailtrap.io/register/signup?ref=header)\n\n[Pricing](https://mailtrap.io/pricing/)\n\n[![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2042%2045'%3E%3C/svg%3E)\n\n### Email API/SMTP\n\nSend transactional & promo emails\n\n](https://mailtrap.io/pricing?tab=email-api)[![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2044%2046'%3E%3C/svg%3E)\n\n### Email Sandbox\n\nTest your emails\n\n](https://mailtrap.io/pricing?tab=email-sandbox)\n\n![](https://mailtrap.io/wp-content/uploads/2025/05/yelp.svg)\n\n![](https://mailtrap.io/wp-content/uploads/2025/05/PayPal.svg)\n\n![](https://mailtrap.io/wp-content/uploads/2025/05/Toptal.svg)\n\n![](https://mailtrap.io/wp-content/uploads/2025/05/Calendly.svg)\n\n![](https://mailtrap.io/wp-content/uploads/2025/05/Atlassian.svg)\n\n![](https://mailtrap.io/wp-content/uploads/2025/05/Adobe.svg)\n\n[![](https://mailtrap.io/wp-content/uploads/2025/11/api-smtp-logo.svg)\n\nEmail API and SMTP\n\nReliably send transactional and promo emails.\n\n ![](https://mailtrap.io/wp-content/uploads/2025/11/for-sending.png)](https://mailtrap.io/email-sending/) [![](https://mailtrap.io/wp-content/uploads/2025/11/sandbox-logo.svg)\n\nEmail Sandbox\n\nFor devs and QAs to safely test staging emails.\n\n ![](https://mailtrap.io/wp-content/uploads/2025/11/for-sandbox.png)](https://mailtrap.io/email-sandbox/)\n\nTrusted by 150,000+ monthly active users\n\n![](https://mailtrap.io/wp-content/themes/mailtrap//images/img__empty.png)\n\n![](https://mailtrap.io/wp-content/themes/mailtrap//images/img__empty.png)\n\n![](https://mailtrap.io/wp-content/themes/mailtrap//images/img__empty.png)\n\n![](https://mailtrap.io/wp-content/themes/mailtrap//images/img__empty.png)\n\n### Raphael EschCTO\n\nEvery time I’ve thought, “it would be great if it could do this,” Mailtrap already did. It is a polished product from a team that listens. It’s exactly what we need to handle our critical B2B marketplace communications.\n\n4:19 PM – 13 Feb 2026\n\n### Khalid HasanProduct manager\n\nBuilding simplistic things is the hardest, but Mailtrap is just simple. I just throw the documentation into Cursor and it works flawlessly. It stood out with a perfect bucket of features other services charged way more for.\n\n10:35 AM – 24 Jan 2026\n\n### Todd MerrillCTO\n\nMailtrap solved a real problem for us. It’s a stable system that provides the visibility our marketing team needs without compromising our high-security infrastructure. It was far easier to turn on than complex cloud providers — our devs are happy.\n\n1:10 PM – 16 Jan 2026\n\n### Stelyana BalevaPrincipal Analyst\n\nMailtrap has been a game changer. Switching was very quick and the UI is super fast and intuitive, it takes much less time than SendGrid. The interface is amazing, always working, and I’m not missing anything from our old tool.\n\n4:42 PM – 10 Mar 2026\n\n### Andrew CroweChief Digital Officer\n\nPrior to Mailtrap, testing was a world of pain. Mailtrap has certainly made things a lot easier for our teams. It’s a very well thought out, stable system that does the job.\n\n10:54 AM – 5 Jan 2026\n\n### Andrey Azimov[@AndreyAzimov](https://x.com/AndreyAzimov)\n\nI switched from Postmark to @Mailtrap for sending ~1M emails per month for my SaaS. It’s cheaper and and has a better stats design. Also, their team is very nice and helped me to improve open and bounce rates.\n\n[3:12 PM – 10 Oct 2024](https://x.com/AndreyAzimov/status/1844380424317153508)\n\n### Tom Ravn[@TomR4vn](https://x.com/TomR4vn/)\n\nI am testing Mailtrap last weeks. You can send emails from your domain for free. They allow 1000 mails/month. It is quite ok. It can be used with good old SMTP connection or via API. https://mailtrap.io/\n\n[12:49 PM – 20 Feb 2023](https://x.com/TomR4vn/status/1627651589778419712)\n\n### Joshua Lim S. Ming[@limshengming](https://x.com/limshengming/)\n\nI’ve dreaded setting up VPS’ to work with an external SMTP but @Mailtrap made things so easy! They’ve got the code and everything that you can copy and paste!\n\n[12:35 PM – 2 Dec 2022](https://x.com/limshengming/status/1598657208639950848)\n\n### Tr1p[@tr1pwyr](https://x.com/tr1pwyr/)\n\nY’all know what’s really good? https://mailtrap.io/ @Mailtrap\n\n[3:44 PM – 16 May 2023](https://x.com/tr1pwyr/status/1658483499584851970)\n\n### Joshua Anderton[@joshuaanderton](https://x.com/joshuaanderton)\n\nJust signed up for @Mailtrap and I’m loving it. So easy to set up. Provides so much peace of mind. Ahh just love it.\n\n[7:38 PM – 13 Jan 2021](https://x.com/joshuaanderton/status/1349410404217221120)\n\n### DeveloperMitch[@mitchellfinlay](https://x.com/mitchellfinlay)\n\nAfter all these years of web development, how have I only JUST started using @Mailtrap. I had heard about it, but never got round to using it. An awesome way of testing emails 👏\n\n[1:25 PM – 7 Nov 2020](https://x.com/mitchellfinlay/status/1325036527823572993)\n\n### Alessandro Rodi[@coorasse](https://x.com/coorasse)\n\nI love @Mailtrap. It removes all the asshole of configuring email servers in test environments. Great service! Is totally worth your money!\n\n[1:15 PM – 20 Oct 2020](https://x.com/coorasse/status/1318496092762374144)\n\n### Mr. Glass[@MisterGlass](https://x.com/MisterGlass)\n\nShout out to @Mailtrap, hands down the best way to handle mail sending in local/test environments.\n\n[11:43 PM – 21 May 2020](https://x.com/MisterGlass/status/1263571221020581888)\n\n### Rado Georgiev[@Rado\\_g](https://x.com/Rado_g)\n\nOne thing we started using recently is @Mailtrap for our dev & staging environments. We were previously either turning email sending entirely off for staging or running SES + whitelist. Turns out, having a fake SMTP mailbox is great and you can test better with it.\n\n[1:32 PM – 6 Jan 2021](https://x.com/Rado_g/status/1214147850013163520)\n\n### Doug Black Jr[@dougblackjr](https://x.com/dougblackjr)\n\nCan we all agree @Mailtrap is a gift to developers everywhere? It just works SO easily out of the box!!!!\n\n[9:45 PM – 11 Aug 2020](https://x.com/dougblackjr/status/1293257227042783232)\n\n## Industry best analytics\n\nComplex and user-friendly dashboards with key deliverability metrics for every mailbox provider.\n\n-   ### Actionable dashboards\n-   ### Open and click tracking\n-   ### Up to 30 days email logs\n\n[![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2016%2017'%3E%3C/svg%3E)Sign Up](https://mailtrap.io/register/signup?ref=header)\n\n![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20650%20501'%3E%3C/svg%3E)\n\n## Power up your workflow with smart integrations\n\nEasily connect Mailtrap to the tools you use and keep everything running smoothly.\n\n[\n\n![](https://mailtrap.io/wp-content/uploads/2025/06/supabase.png)\n\n## Supabase\n\nNative Mailtrap SMTP integration for Supabase projects.\n\n](https://mailtrap.io/integrate-with/supabase/)[\n\n![](https://mailtrap.io/wp-content/uploads/2025/09/Vercel.png)\n\n## Vercel\n\nNative integration for sending and testing environments.\n\n](https://mailtrap.io/integrate-with/vercel/)[\n\n![](https://mailtrap.io/wp-content/uploads/2025/08/Claude.io_.png)\n\n## Claude Code\n\nSend emails, manage templates & sending domains, and pull stats.\n\n](https://mailtrap.io/integrate-with/claude-code/)[\n\n![](https://mailtrap.io/wp-content/uploads/2025/08/Cursor.png)\n\n## Cursor\n\nSend emails and manage email templates directly from Cursor.\n\n](https://mailtrap.io/integrate-with/cursor/)[\n\n![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20200%20200'%3E%3C/svg%3E)\n\n## Mailtrap MCP Server\n\nSend emails, manage templates and pull delivery stats from AI clients.\n\n](https://mailtrap.io/integrate-with/mcp-server/)[\n\n![](https://mailtrap.io/wp-content/uploads/2026/03/antigravity-integration-logo.png)\n\n## Google Antigravity\n\nSend and test emails and manage templates in Antigravity.\n\n](https://mailtrap.io/integrate-with/antigravity/)\n\n[View All Integrations](https://mailtrap.io/integrate-with/)\n\n### 24/7 expert support\n\nOur tech support team consists of **engineers** and **deliverability experts** who are always ready to assist you with any issue. Urgent cases are addressed immediately.\n\n[![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2016%2017'%3E%3C/svg%3E)Help Center](https://docs.mailtrap.io/)\n\n![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20700%20651'%3E%3C/svg%3E)![](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20375%20349'%3E%3C/svg%3E)\n",
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  "llmsTxtPreview": "# Mailtrap\n\n> Modern Email Delivery Platform for developer & product teams. Fast delivery. High inboxing rates. 24/7 expert support. Email API/SMTP for reliable email sending\n\n## Main\n- [Mailtrap: Modern Email Delivery for dev and product teams](https://mailtrap.io): Modern Email Delivery Platform for developer & product teams. Fast delivery. High inboxing rates. 24/7 expert support.…\n- [Email API/SMTPSend transactional & promo emails](https://mailtrap.io/pricing?tab=email-api)\n- [Email SandboxTest your emails](https://mailtrap.io/pricing?tab=email-sandbox)\n- [Pricing](https://mailtrap.io/pricing/)\n- [Email API/SMTPRESTful API and SMTP for reliable email sending](https://mailtrap.io/email-sending/)\n- [Email SandboxInspect and debug emails in staging, dev & QA environments](https://mailtrap.io/email-sandbox/)\n- [Email MarketingCreate, schedule, and send email marketing campaigns](https://mailtrap.io/email-marketing/)\n- [Email API](https://mailtrap.io/email-api/)\n- [SMTP Service](https://mailtrap.io/smtp-service/)\n- [Bulk Stream](https://mailtrap.io/bulk-email-service/)\n- [Actionable Analytics](https://mailtrap.io/actionable-analytics/)\n- [Fake SMTP](https://mailtrap.io/fake-smtp-server/)\n\n## Blog\n- [BlogThe best content about emails.st7{fill:#fff}.st26{fill:#1f3248}](https://mailtrap.io/blog/)\n\n## Legal\n- [Privacy Policy](https://mailtrap.io/privacy/)\n- [Terms of Service](https://mailtrap.io/terms/)\n\n",
  "llmsTxtExisting": "# Mailtrap\n\n> Modern email delivery for developers and product teams\n\n\n## Posts\n\n- [Email throttling: the ultimate guide for technical teams](https://mailtrap.io/blog/email-throttling/)\n- [8 Best Email Deliverability Agencies Reviewed](https://mailtrap.io/blog/email-deliverability-agencies/)\n- [5 Appointment Reminders Templates to Increase Engagement](https://mailtrap.io/blog/appointment-reminders-templates/)\n- [Inbox Placement: A Beginner's Guide](https://mailtrap.io/blog/inbox-placement/)\n- [I Compared 7 Best Transactional Email Services: Here’s What I Found](https://mailtrap.io/blog/transactional-email-services/)\n- [Find Out Why Email Marketing Is Important: 11 Reasons Why You Should Invest](https://mailtrap.io/blog/why-email-marketing-is-important/)\n- [Les 5 meilleurs services d'API email pour développeurs testés et comparés : voici ce que j'ai trouvé](https://mailtrap.io/fr/blog/best-email-api/)\n- [What is an ESP or Email Service Provider? A Beginner’s Guide](https://mailtrap.io/blog/what-is-an-esp-email-service-provider/)\n- [Cancellation Email: What it is, Examples, and Templates](https://mailtrap.io/blog/cancellation-email/)\n- [5 Best Email API for Python Developers Tested & Compared](https://mailtrap.io/blog/best-email-api-for-python-developers/)\n- [10 B2B Email Marketing Software Tried, Tested, and Compared: Find Out The Best Pick for Your Company](https://mailtrap.io/blog/b2b-email-marketing-software/)\n- [7 Subject Line Testers Tried & Compared: Here’s What I Found](https://mailtrap.io/blog/email-subject-line-testers/)\n- [5 Best Email API for Laravel Developers Tested & Compared](https://mailtrap.io/blog/best-email-api-for-laravel-developers/)\n- [How to Create a WordPress Contact Form: With or Without Plugin, Add Form Validation, and Set Up Email Sending](https://mailtrap.io/blog/wordpress-contact-form/)\n- [How to Configure WordPress SMTP Settings ](https://mailtrap.io/blog/wordpress-smtp-settings/)\n- [Best 8 WordPress Transactional Email Plugins Reviewed](https://mailtrap.io/blog/wordpress-transactional-email-plugins/)\n- [How to Send Emails in WordPress using Plugin, wp_mail() Function, and SMTP](https://mailtrap.io/blog/wordpress-send-email/)\n- [5 Best Email API for PHP Developers Tested & Compared: Here’s What I Found](https://mailtrap.io/blog/best-email-api-for-php-developers/)\n- [Honest Review of Neo Mail: Create Business Email with Free Domain](https://mailtrap.io/blog/review-of-neo/)\n- [5 Best Email API for Node.js Developers Tested & Compared](https://mailtrap.io/blog/best-email-api-for-nodejs-developers/)\n- [API for Email Sending Stats: Track the Performance of Your Emails Directly from Your App/Project](https://mailtrap.io/blog/email-sending-stats-api-launch/)\n- [BIMI: the New Word in Email Authentication](https://mailtrap.io/blog/bimi-email/)\n- [Send Emails in Django: A Developer’s Tutorial to SMTP & Email API Methods](https://mailtrap.io/blog/django-send-email/)\n- [How to Test Your WooCommerce Emails: Insights and Obstacles to Overcome](https://mailtrap.io/blog/woocommerce-test-email/)\n- [Salesforce Email Integration: A Comprehensive Guide](https://mailtrap.io/blog/salesforce-email-integration/)\n- [50+ Black Friday & Cyber Monday SaaS Deals 2025 ](https://mailtrap.io/blog/black-friday-software-deals-2025/)\n- [Tutoriel HTML : Envoyer des Emails depuis un Formulaire HTML](https://mailtrap.io/fr/blog/html-form-send-email/)\n- [Las 5 mejores API de email para desarrolladores: probadas y comparadas](https://mailtrap.io/es/blog/best-email-api/)\n- [9 Best Email Hosting Providers ](https://mailtrap.io/blog/email-hosting-providers/)\n- [I 5 migliori servizi di API email per sviluppatori testati e messi a confronto: ecco il risultato](https://mailtrap.io/it/blog/best-email-api/)\n- [Top 12 Email Design Examples to Inspire Your Next Campaign in 2025](https://mailtrap.io/blog/top-email-design-examples/)\n- [Free Business Emails: 4 Ways to Get Free Accounts](https://mailtrap.io/blog/best-free-business-emails/)\n- [How to Track Email Campaign Performance: 9 Best Email Marketing Dashboards to Use](https://mailtrap.io/blog/best-email-marketing-dashboards/)\n- [Slack Email Integration: Sending and Receiving Emails](https://mailtrap.io/blog/slack-email/)\n- [Call to Action in Emails: Examples, Templates, Tips ](https://mailtrap.io/blog/call-to-action-in-emails/)\n- [What Is The Best Email Marketing Software for Startups? I Tested & Compared 11 Platforms to Find Out](https://mailtrap.io/blog/email-marketing-platforms-for-startups/)\n- [Ich habe die 6 besten Mailgun-Alternativen getestet und verglichen: Meine Ergebnisse](https://mailtrap.io/de/blog/mailgun-alternatives/)\n- [SMTP-Anbieter im Vergleich: Wählen Sie den besten Anbieter für den Versand von Transaktions- und Marketing-E-Mails](https://mailtrap.io/de/blog/smtp-providers/)\n- [Email Marketing For An Agency: A Go-To Guide For Beginners](https://mailtrap.io/blog/email-marketing-for-agencies/)\n- [Why Customer Centricity Is Important for Business Growth](https://mailtrap.io/blog/customer-centricity/)\n- [As 5 melhores APIs de email para programadores: teste e comparação](https://mailtrap.io/pt/blog/best-email-api/)\n- [実際に試して比較！優れたMailgun代替サービス6選の検証結果](https://mailtrap.io/ja/blog/mailgun-alternatives/)\n- [SMTPプロバイダー比較：トランザクションメールとマーケティングメール送信に最適な1社を選ぼう](https://mailtrap.io/ja/blog/smtp-providers/)\n- [HTMLチュートリアル：HTMLフォームからのメール送信](https://mailtrap.io/ja/blog/html-form-send-email/)\n- [Ho provato e confrontato le 6 migliori alternative a Mailgun: ecco cosa ho scoperto](https://mailtrap.io/it/blog/mailgun-alternatives/)\n- [J'ai testé et comparé les 6 meilleures alternatives à Mailgun : mes conclusions](https://mailtrap.io/fr/blog/mailgun-alternatives/)\n- [Testei 17 ferramentas de entregabilidade de email: eis as que deve usar](https://mailtrap.io/pt/blog/email-deliverability-tools/)\n- [Probé y comparé las 6 mejores alternativas a Mailgun: aquí le presento mis conclusiones](https://mailtrap.io/es/blog/mailgun-alternatives/)\n- [Comparando proveedores SMTP: elija el mejor para enviar emails transaccionales y de marketing](https://mailtrap.io/es/blog/smtp-providers/)\n- [Comparaison des fournisseurs SMTP : choisissez le meilleur fournisseur pour envoyer des emails transactionnels et marketing](https://mailtrap.io/fr/blog/smtp-providers/)\n- [Servizi SMTP a confronto: scegli il migliore per l'invio di email transazionali e di marketing](https://mailtrap.io/it/blog/smtp-providers/)\n- [He probado 17 herramientas de entregabilidad de email: esto es lo que usted debería usar](https://mailtrap.io/es/blog/email-deliverability-tools/)\n- [Provedores SMTP comparados: escolha o melhor para enviar emails transacionais e de marketing](https://mailtrap.io/pt/blog/smtp-providers/)\n- [Experimentei e comparei as 6 melhores alternativas ao Mailgun: as minhas conclusões](https://mailtrap.io/pt/blog/mailgun-alternatives/)\n- [Manage Setups with Multiple Teams with Organization and Sub-Accounts](https://mailtrap.io/blog/organization-and-sub-accounts/)\n- [I Tested 18 Email Deliverability Tools: Here’s What You Should Use](https://mailtrap.io/blog/email-deliverability-tools/)\n- [5 Best Email Infrastructure Platforms Reviewed](https://mailtrap.io/blog/email-infrastructure-platforms/)\n- [Refer a Friend Email Templates: For Business and HR [2025]](https://mailtrap.io/blog/refer-a-friend-email-templates/)\n- [Mailtrap Releases Automations: Build Email Sequences Using Visual Blocks](https://mailtrap.io/blog/automations-launch/)\n- [Data-Driven Email Marketing: A Go-to Guide for Beginners](https://mailtrap.io/blog/data-driven-email-marketing/)\n- [Le Marketing par Email pour Débutants : Guide Complet des Bases aux Meilleures Pratiques](https://mailtrap.io/fr/blog/email-marketing/)\n- [Email Deliverability Issues: How to Diagnose, Fix, and Prevent Them](https://mailtrap.io/blog/email-deliverability-issues/)\n- [10 Best Free Email Marketing Platforms Compared: Find Out Which One You Should Try](https://mailtrap.io/blog/free-email-marketing-platforms/)\n- [How to Send Emails in Bun.js: SMTP & Email API Methods Explained](https://mailtrap.io/blog/bunjs-send-email/)\n- [Email Deliverability Revenue](https://mailtrap.io/blog/email-deliverability-revenue/)\n- [I Tested 6 Postmark Alternatives: Here’s What I Found](https://mailtrap.io/blog/postmark-alternatives/)\n- [SMTP Providers Security Comparison: Which Service Offers the Best Security?](https://mailtrap.io/blog/smtp-providers-security-comparison/)\n- [SMTP vs Email API Explained & Compared: Find Out What Method Developers Should Use](https://mailtrap.io/blog/smtp-vs-email-api/)\n- [Improve Email Deliverability: Here’s How & Best Practices to Follow](https://mailtrap.io/blog/how-to-improve-email-deliverability/)\n- [PHPMailer-Guide: Konfiguration, SMTP-Einrichtung und E-Mail-Versand](https://mailtrap.io/de/blog/phpmailer/)\n- [So senden Sie E-Mails in Python: SMTP- & E-Mail-API-Methoden erklärt](https://mailtrap.io/de/blog/python-send-email/)\n- [So senden Sie E-Mails mit Telnet](https://mailtrap.io/de/blog/telnet-send-email/)\n- [So senden Sie E-Mails in Python mit Gmail SMTP und API](https://mailtrap.io/de/blog/python-send-email-gmail/)\n- [E-Mail-Marketing für Anfänger: Ein vollständiger Leitfaden von den Grundlagen bis zu den Best Practices](https://mailtrap.io/de/blog/email-marketing/)\n- [E-Mails in PHP senden mit SMTP oder API: PHPMailer, Symfony Mailer und die mail()-Funktion](https://mailtrap.io/de/blog/php-email-sending/)\n- [What is Email Marketing Customer Journey and How to Create a Customer Journey Map](https://mailtrap.io/blog/email-marketing-customer-journey/)\n- [7 Proven Email Marketing Optimization Strategies](https://mailtrap.io/blog/email-marketing-optimization/)\n- [10 Tried-and-Tested Email Marketing Examples That Convert (+1 Smart Bonus)](https://mailtrap.io/blog/email-marketing-examples/)\n- [Office 365 SMTP: Einrichtung und Konfiguration erklärt](https://mailtrap.io/de/blog/office-365-smtp/)\n- [Detaillierte Anleitung zur SMTP-Einrichtung und -Konfiguration von Gmail](https://mailtrap.io/de/blog/gmail-smtp/)\n- [5 Best Email API Services For Developers Tested & Compared: Here’s What I Found](https://mailtrap.io/blog/best-email-api/)\n- [8 Best Marketing Tips: Personal Insights for Improving Email Campaigns](https://mailtrap.io/blog/email-marketing-tips/)\n- [Choosing the Best SMTP Providers - Top 5 SMTP Providers Compliance Comparison](https://mailtrap.io/blog/smtp-providers-compliance-comparison/)\n- [I Compared 5 Best SMTP Providers for FinTech Companies: Which One Should You Use](https://mailtrap.io/blog/smtp-providers-for-fintech/)\n- [What is an Email API?](https://mailtrap.io/blog/what-is-an-email-api/)\n- [How to Send Emails with Email API: Practical Examples in Popular Languages and Frameworks](https://mailtrap.io/blog/api-send-email/)\n- [Ich habe 6 SendGrid-Alternativen getestet: Hier sind meine Ergebnisse](https://mailtrap.io/de/blog/sendgrid-alternative/)\n- [Which Email API Offers The Most Flexibility: In-Depth Comparison of Best Providers](https://mailtrap.io/blog/email-api-flexibility/)\n- [Email Deliverability Audit: A Step-by-Step Guide](https://mailtrap.io/blog/email-deliverability-audit/)\n- [Microsoft SNDS: Learn How to Improve Outlook Email Deliverability](https://mailtrap.io/blog/microsoft-snds/)\n- [EmailJS React: How to Send Emails From a Contact Form Without a Backend](https://mailtrap.io/blog/emailjs-react/)\n- [ESP Migration Guide for SaaS and Product-Based Companies](https://mailtrap.io/blog/esp-migration/)\n- [How to Creat Email Marketing Strategy & An Overview of Ready-to-Use Strategies](https://mailtrap.io/blog/email-marketing-strategy/)\n- [Google Postmaster Tools: Learn How To Improve Gmail Email Deliverability](https://mailtrap.io/blog/google-postmaster-tools/)\n- [How to Send Emails Client-Side: A Developer’s Tutorial to EmailJS](https://mailtrap.io/blog/emailjs/)\n- [What Are Email IP Pools and Why Should You Use Them for Higher Email Deliverability](https://mailtrap.io/blog/email-ip-pools/)\n- [Email Deliverability Explained: Everything You Need to Know](https://mailtrap.io/blog/email-deliverability/)\n- [B2B Email Marketing: A Go-to Guide for Businesses](https://mailtrap.io/blog/b2b-email-marketing/)\n- [I’ve Tested 8 Email List Building Tools And Here’s What I Found](https://mailtrap.io/blog/email-list-building-tools/)\n- [Beyond the Basics: A Practical Review of 5 Email List Management Solutions](https://mailtrap.io/blog/email-list-management-tools/)\n- [What Is an Email List and How to Build One Right](https://mailtrap.io/blog/email-list/)\n- [Email List Cleaning: Personal Insights On Ensuring High Email Deliverability](https://mailtrap.io/blog/clean-email-list/)\n- [PythonでGmailのSMTPとAPIを使ってメールを送る方法](https://mailtrap.io/ja/blog/python-send-email-gmail/)\n- [Email Header Design Tips, Examples, and Tools for 2025](https://mailtrap.io/blog/email-header-design/)\n- [10 Mass Email Services Reviewed & Compared: Here’s What I Found](https://mailtrap.io/blog/mass-email-service-providers/)\n- [J'ai Testé 6 Alternatives à SendGrid : Voici Mes Conclusions](https://mailtrap.io/fr/blog/sendgrid-alternative/)\n- [How to Do Email Marketing for Dentists](https://mailtrap.io/blog/email-marketing-for-dentists/)\n- [Email Marketing for E-Commerce: A Beginner's Guide](https://mailtrap.io/blog/ecommerce-email-marketing/)\n- [Email List Growth Explained: Here’s 10 Steps You Have to Take](https://mailtrap.io/blog/email-list-growth/)\n- [Die 6 besten E-Mail-Marketing-Plattformen im Vergleich: Finden Sie Ihren Favorit](https://mailtrap.io/de/blog/email-marketing-platforms/)\n- [Email Marketing para Principiantes: Una Guía Completa desde lo Básico hasta las Mejores Prácticas](https://mailtrap.io/es/blog/email-marketing/)\n- [【初心者でも分かるメールマーケティング】 基礎からベストプラクティスまでを網羅する完全ガイド](https://mailtrap.io/ja/blog/email-marketing/)\n- [How to Send Emails in a Lovable React App Using EmailJS](https://mailtrap.io/blog/lovable-send-email/)\n- [Ich habe 7 transaktionale E-Mail-Dienste verglichen: Hier sind meine Ergebnisse](https://mailtrap.io/de/blog/transactional-email-services/)\n- [How to Send Emails in a Replit App](https://mailtrap.io/blog/replit-send-email/)\n- [How to Choose Email Service Provider: Actionable Q&A Guide](https://mailtrap.io/blog/how-to-choose-email-service-provider/)\n- [Office 365 SMTP : Configuration et Paramétrage Expliqués](https://mailtrap.io/fr/blog/office-365-smtp/)\n- [Comparaison des 6 Meilleures Plateformes d'Email Marketing : Découvrez Votre Choix de Prédilection](https://mailtrap.io/fr/blog/email-marketing-platforms/)\n- [Testei 6 Alternativas ao SendGrid: Eis o que Descobri](https://mailtrap.io/pt/blog/sendgrid-alternative/)\n- [How to Send Emails in Next.js using Client & Server-Side Methods: A Complete Guide](https://mailtrap.io/blog/nextjs-send-email/)\n- [Ho messo a confronto 7 servizi di email transazionali: ecco cosa ho scoperto](https://mailtrap.io/it/blog/transactional-email-services/)\n- [Ho testato 6 alternative a SendGrid: ecco cosa ho scoperto](https://mailtrap.io/it/blog/sendgrid-alternative/)\n- [Le 6 migliori piattaforme di email marketing a confronto: Scopri qual è la migliore per te](https://mailtrap.io/it/blog/email-marketing-platforms/)\n- [J'ai Comparé 7 Services d'Email Transactionnel : Voici Mes Conclusions](https://mailtrap.io/fr/blog/transactional-email-services/)\n- [As 6 Melhores Plataformas de Email Marketing Comparadas: Descubra Sua Opção Preferida](https://mailtrap.io/pt/blog/email-marketing-platforms/)\n- [My Flask Email Verification Flow: How I Verify Emails Step-by-Step](https://mailtrap.io/blog/flask-email-verification/)\n- [He Probado 6 Alternativas a SendGrid: Esto es lo que Encontré](https://mailtrap.io/es/blog/sendgrid-alternative/)\n- [How to Send Emails from Supabase using SMTP or Email API](https://mailtrap.io/blog/supabase-send-email/)\n- [How to Send Emails in Bolt.new with a React App Using EmailJS](https://mailtrap.io/blog/bolt-new-send-email/)\n- [How to Send Emails in Retool](https://mailtrap.io/blog/retool-send-email/)\n- [13 Reasons & Solutions for Why Your Emails Are Going to Spam](https://mailtrap.io/blog/why-are-my-emails-going-to-spam/)\n- [I Tried & Compared 6 Best Mailgun Alternatives: My Findings](https://mailtrap.io/blog/mailgun-alternatives/)\n- [I Tested 6 SendGrid Alternatives: Here’s What I Found](https://mailtrap.io/blog/sendgrid-alternative/)\n- [7 Best SMTP Services for Email Marketing ](https://mailtrap.io/blog/best-smtp-service-for-email-marketing/)\n- [Free SMTP Servers Compared: Choose the Best One for Sending Transactional and Marketing Emails](https://mailtrap.io/blog/free-smtp-servers/)\n- [SMTP Providers Compared: Choose the Best One for Sending Transactional and Marketing Emails](https://mailtrap.io/blog/smtp-providers/)\n- [How to Send Emails from Netlify using SMTP or email API](https://mailtrap.io/blog/netlify-send-email/)\n- [SendGridの代替ツール6選を検証してみて分かったこと](https://mailtrap.io/ja/blog/sendgrid-alternative/)\n- [【解説記事】OutlookでSMTPを利用する場合の設定・構成・デバッグチュートリアル](https://mailtrap.io/ja/blog/outlook-smtp/)\n- [Las 6 Mejores Plataformas de Email Marketing Comparadas: Descubra Su Opción Favorita](https://mailtrap.io/es/blog/email-marketing-platforms/)\n- [How to Send Emails in Claude Desktop with Mailtrap MCP](https://mailtrap.io/blog/claude-desktop-send-email/)\n- [Let Your AI Agent Send Emails: Mailtrap MCP Server is Now Live!](https://mailtrap.io/blog/mcp-server-launch/)\n- [Outlook’s New High-Volume Sender Requirements Update: What’s Changed?](https://mailtrap.io/blog/outlook-new-email-sender-requirements/)\n- [Shared vs. Dedicated IP: Role, Impact, and Use Cases in Email Sending](https://mailtrap.io/blog/shared-vs-dedicated-ip/)\n- [How to Send Emails in VS Code with Mailtrap MCP Server](https://mailtrap.io/blog/vs-code-send-email/)\n- [最強メールマーケティングプラットフォーム6選の比較検証: あなたにぴったりのツールを見つけてみよう](https://mailtrap.io/ja/blog/email-marketing-platforms/)\n- [How to Send Emails in Cursor with Mailtrap MCP Server](https://mailtrap.io/blog/cursor-send-email/)\n- [How to Send Emails in Bubble.io Using Email API](https://mailtrap.io/blog/bubble-io-send-email/)\n- [6 B2B E-Mail-Marketing Software-Lösungen im Test und Vergleich: Finden Sie die beste Lösung für Ihr Unternehmen](https://mailtrap.io/de/blog/b2b-email-marketing-software/)\n- [Die 7 besten kostenlosen E-Mail-Marketing-Plattformen im Vergleich: Finden Sie heraus, welche Sie ausprobieren sollten](https://mailtrap.io/de/blog/free-email-marketing-platforms/)\n- [Comparé 7 Servicios de Email Transaccional: Esto es lo que Descubrí](https://mailtrap.io/es/blog/transactional-email-services/)\n- [徹底比較検証: 優良なトランザクションメールサービス7選](https://mailtrap.io/ja/blog/transactional-email-services/)\n- [徹底比較: 優良なB2Bメールマーケティングソフトウェア6選! あなたのビジネスにぴったりなツールを解説](https://mailtrap.io/ja/blog/b2b-email-marketing-software/)\n- [10 Win Back Customer Email Templates to Draw Back Customers](https://mailtrap.io/blog/win-back-customer-email-templates/)\n- [5 Customer Retention Email Templates that Drive 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Marketing](https://mailtrap.io/blog/ccpa-email/)\n- [13 Effective Welcome to the Team Email Templates for Smooth Onboarding](https://mailtrap.io/blog/welcome-to-the-team-email-template/)\n- [DNS MX Records Explained](https://mailtrap.io/blog/dns-mx-records/)\n- [How to Create SaaS Free Trial Emails That Convert](https://mailtrap.io/blog/saas-free-trial-email/)\n- [Referral Email Marketing: What It is and How It Works](https://mailtrap.io/blog/referral-email-marketing/)\n- [Learn What an Email Marketing Funnel Is and How to Make It Work](https://mailtrap.io/blog/email-marketing-funnel/)\n- [We Asked Industry Experts to Share their Insights on Inbound and Outbound Email Marketing. Here’s What We Found](https://mailtrap.io/blog/outbound-vs-inbound-email-marketing/)\n- [25, 2525, 465, 587, and Other Numbers: All About SMTP Ports](https://mailtrap.io/blog/smtp-ports-25-465-587-used-for/)\n- [Email Blast: Best Practice to Maximize Results](https://mailtrap.io/blog/email-blast/)\n- [Using Handlebars with Mailtrap Email Templates | Quick Guide with Examples](https://mailtrap.io/blog/using-handlebars-with-mailtrap-email-templates-quick-guide-with-examples/)\n- [Learn the Right Way to Calculate Email Open Rate](https://mailtrap.io/blog/calculate-email-open-rate/)\n- [Web Hosting vs. Mail Hosting](https://mailtrap.io/blog/web-hosting-vs-email-hosting/)\n- [How to Create an Email Template in Outlook](https://mailtrap.io/blog/create-email-template-outlook/)\n- [<strong>ActionMailer Balancer: Keeping the Email Sending Equilibrium</strong>](https://mailtrap.io/blog/actionmailer-balancer/)\n- [What are webhooks and how to use them](https://mailtrap.io/blog/what-are-webhooks-and-how-to-use-them/)\n- [Mailtrap and Sendgrid - In-Depth Comparison](https://mailtrap.io/blog/mailtrap-vs-sendgrid/)\n- [How to Improve Your Emails With CSS?](https://mailtrap.io/blog/email-css/)\n- [Sending Emails with Ruby](https://mailtrap.io/blog/ruby-send-email/)\n- [Email Archiving Guide](https://mailtrap.io/blog/email-archiving-guide/)\n- [How to Embed HTML5 Video in Email](https://mailtrap.io/blog/html5-video-in-email/)\n- [Backend Testing Guide](https://mailtrap.io/blog/back-end-testing/)\n- [Email Accessibility Guide](https://mailtrap.io/blog/email-accessibility/)\n- [Interactive Emails Explained with Examples](https://mailtrap.io/blog/interactive-emails/)\n- [Cloud Email Explained with Options to Consider](https://mailtrap.io/blog/cloud-email/)\n- [How to Validate an Email Address in C#](https://mailtrap.io/blog/validate-email-address-c/)\n- [How to Send Emails with CodeIgniter](https://mailtrap.io/blog/send-emails-with-codeigniter/)\n- [More Control Over Your Mailtrap Account With New User Management](https://mailtrap.io/blog/more-control-over-your-mailtrap-account-new-user-management/)\n- [Blockchain Email Now and in the Future Perspective](https://mailtrap.io/blog/email-and-blockchain/)\n- [GIF in Emails](https://mailtrap.io/blog/gif-in-emails/)\n- [How Email List Cleaning Can Give a New Lease of Life to your Email Marketing?](https://mailtrap.io/blog/email-list-cleaning/)\n- [Email Click-Through Rate: What to Know and How to Boost](https://mailtrap.io/blog/email-click-through-rate/)\n- [Dynamic Email Content: What You Need To Know](https://mailtrap.io/blog/dynamic-email-content/)\n- [A Guide To Email Marketing Automation — Benefits, Tools, and Tips](https://mailtrap.io/blog/email-marketing-automation/)\n- [7 Email Design Mistakes That Can Negatively Impact Your ROI](https://mailtrap.io/blog/email-design-mistakes/)\n- [Email testing with Selenium WebDriver on a Cloud-Based Selenium Grid](https://mailtrap.io/blog/email-testing-selenium-webdriver/)\n- [Authenticated Received Chain Explained](https://mailtrap.io/blog/authenticated-received-chain/)\n- [Should Your Team Have a Dedicated Email Developer?](https://mailtrap.io/blog/dedicated-email-developer/)\n- [Email marketing in 2021: COVID-19 impact, predictions & expert opinions](https://mailtrap.io/blog/email-marketing-predictions-2021/)\n- [Understanding Your SpamAssassin Score and Fixing It](https://mailtrap.io/blog/spamassassin-score/)\n- [CakePHP Email Sending](https://mailtrap.io/blog/cakephp-email/)\n- [Confirmation Email Samples](https://mailtrap.io/blog/confirmation-email-examples/)\n- [Laravel Email Testing: Mailtrap vs. Other Options](https://mailtrap.io/blog/laravel-email-testing/)\n- [Meet the New Mailtrap Look](https://mailtrap.io/blog/new-mailtrap-look/)\n- [What To Know About PCI DSS Compliance And Email](https://mailtrap.io/blog/pcs-dss-email-compliance/)\n- [AI for Product Recommendations in Email](https://mailtrap.io/blog/ai-product-recommendations-email/)\n- [QA Testing Memes](https://mailtrap.io/blog/qa-testing-memes/)\n- [Spam Memes Collection](https://mailtrap.io/blog/spam-memes-collection/)\n- [How to Validate Email Format in Rails: Regex and Gems](https://mailtrap.io/blog/rails-email-validation/)\n- [Work from Home Alternatives for Remote Developers](https://mailtrap.io/blog/work-from-home-alternatives/)\n- [HTML5 Email Validation Tutorial](https://mailtrap.io/blog/html5-email-validation-tutorial/)\n- [Emails vs Instant Messages in a Workplace: Which to Make Your Go-To?](https://mailtrap.io/blog/emails_vs_instant_messages/)\n- [How to Use Infographics in Your Email Newsletters](https://mailtrap.io/blog/infographics-email-marketing/)\n- [The Power of Onboarding Emails for Product Success](https://mailtrap.io/blog/onboarding-email/)\n- [How to Set Up Emails for Password Resets with Devise](https://mailtrap.io/blog/devise-reset-password/)\n- [Geeky Drinks for Better Code](https://mailtrap.io/blog/geeky-drinks-better-code/)\n- [Mailgun Sandbox Domain Explained](https://mailtrap.io/blog/mailgun-sandbox-tutorial/)\n- [What to Do When You Have Sent Test Emails to Your Customers](https://mailtrap.io/blog/sent-wrong-emails/)\n- [Certonid — the SSH Certificate Authority Deployed on AWS Lambda](https://mailtrap.io/blog/certonid/)\n- [How to Track Email Marketing Performance](https://mailtrap.io/blog/email-marketing-reports/)\n- [How to Mask an Email Address](https://mailtrap.io/blog/email-masking/)\n- [Common Email Rendering Issues in Outlook and How to Solve Them](https://mailtrap.io/blog/email-rendering-issues-outlook/)\n- [The Best Email Design Size for Different Campaigns](https://mailtrap.io/blog/email-template-size/)\n- [Laravel Top 18 Packages You Need to Try](https://mailtrap.io/blog/best-laravel-packages/)\n- [Simple Email Validation in Java](https://mailtrap.io/blog/java-email-validation/)\n- [The Best Email Memes](https://mailtrap.io/blog/email-meme/)\n- [SendGrid vs Mailchimp](https://mailtrap.io/blog/sendgrid-vs-mailchimp/)\n- [How to Handle Email Verification in Laravel](https://mailtrap.io/blog/laravel-email-verification/)\n- [Laravel vs Wordpress](https://mailtrap.io/blog/laravel-vs-wordpress/)\n- [Best Email Encryption Software](https://mailtrap.io/blog/email-encryption-software/)\n- [Mail Merge with Python](https://mailtrap.io/blog/python-mail-merge/)\n- [Email Marketing KPIs You Can or Can’t Do Without](https://mailtrap.io/blog/email-marketing-metrics/)\n- [How to Send an Email in R](https://mailtrap.io/blog/r-send-email/)\n- [How Email Tracking Works](https://mailtrap.io/blog/how-email-tracking-works/)\n- [How to Implement DMARC Records](https://mailtrap.io/blog/dmarc-setup/)\n- [HIPAA Compliant Email](https://mailtrap.io/blog/hipaa-compliant-email/)\n- [Send Emails with Swift Mailer from PHP Apps](https://mailtrap.io/blog/swiftmailer-sendmail/)\n- [Emails and GDPR - 11 Questions to Answer](https://mailtrap.io/blog/gdpr-and-emails/)\n- [Your Guide to Laravel Email Queues](https://mailtrap.io/blog/laravel-mail-queue/)\n- [The Best Free Email Tracking Software](https://mailtrap.io/blog/free-email-tracking-tools/)\n- [Your Guide to Safe Emails: Create and Implement a DKIM Record](https://mailtrap.io/blog/create-dkim-tutorial/)\n- [Everything You Want to Know About AMP for Email](https://mailtrap.io/blog/amp-email/)\n- [How to Validate Emails in Angular](https://mailtrap.io/blog/angular-email-validation/)\n- [What Makes a Password Reset Email Great?](https://mailtrap.io/blog/reset-password-email/)\n- [What is an MTA?](https://mailtrap.io/blog/mail-transfer-agent/)\n- [Email Analytics Tools](https://mailtrap.io/blog/email-analytics-tools/)\n- [Learn How to Send Beautiful Mail Notifications in Laravel](https://mailtrap.io/blog/laravel-notification-tutorial/)\n- [Building Contact Form and Handling Emails with React](https://mailtrap.io/blog/react-contact-form/)\n- [550 5.1.1 Error: Detailed Instructions for Fixing It](https://mailtrap.io/blog/550-5-1-1-rejected-fix/)\n- [Test SMTP Relay](https://mailtrap.io/blog/test-smtp-relay/)\n- [All You Wanted to Know About Amazon SQS in 10 Minutes](https://mailtrap.io/blog/amazon-sqs-tutorial/)\n- [Sending Email Notifications with Amazon SNS Made Easy](https://mailtrap.io/blog/amazon-sns-guide/)\n- [What SMTP Queue Is and How to Manage Your Emails](https://mailtrap.io/blog/email-queuing/)\n- [Amazon SES vs SendGrid](https://mailtrap.io/blog/amazon-ses-vs-sendgrid/)\n- [Introduction to MailCatcher](https://mailtrap.io/blog/mailcatcher-guide/)\n- [What Is Amazon SES and How to Use It?](https://mailtrap.io/blog/amazon-ses-explained/)\n- [MailHog Tutorial](https://mailtrap.io/blog/mailhog-explained/)\n- [Sending Emails with React Native](https://mailtrap.io/blog/react-native-send-email/)\n- [Sending Emails with ReactJS](https://mailtrap.io/blog/react-send-email/)\n- [Using and Testing Cc and Bcc in SMTP Protocol](https://mailtrap.io/blog/cc-bcc-in-smtp/)\n- [Choosing an Email Framework for Your Campaigns](https://mailtrap.io/blog/best-email-frameworks/)\n- [What SMTP Authentication Is and Why You Can't Ignore It](https://mailtrap.io/blog/smtp-auth/)\n- [Recommended Maximum Email Size and Proven Ways to Optimize It](https://mailtrap.io/blog/email-size/)\n- [Everything You Need to Know About SMTP Security](https://mailtrap.io/blog/smtp-security/)\n- [List of All SMTP Commands and Response Codes](https://mailtrap.io/blog/smtp-commands-and-responses/)\n- [Why Using Dummy Email for Testing Just Doesn’t Work](https://mailtrap.io/blog/email-for-testing/)\n- [How to Test Emails in Mandrill, Sendgrid, and Mailgun](https://mailtrap.io/blog/test-sendgrid-mandrill-mailgun/)\n- [Sendgrid vs Mandrill vs Mailgun - How to Choose?](https://mailtrap.io/blog/sendgrid-vs-mandrill-vs-mailgun/)\n- [Embedding Images in HTML Email: Have the Rules Changed?](https://mailtrap.io/blog/embedding-images-in-html-email-have-the-rules-changed/)\n- [How to Test SMTP Server from the Command Line via Telnet and in Online Tools](https://mailtrap.io/blog/how-to-test-smtp-server/)\n\n\n## Pages\n\n- [List of Sub-Processors](https://mailtrap.io/sub-processors/)\n- [Privacy Policy](https://mailtrap.io/privacy/)\n- [Railsware Products Studio LLC                                   Data Processing Addendum](https://mailtrap.io/dpa/)\n- [Terms of Service](https://mailtrap.io/terms/)\n- [Deliverability Consulting [PL]](https://mailtrap.io/pl/deliverability-consultation/)\n- [Deliverability Consulting [IT]](https://mailtrap.io/it/deliverability-consultation/)\n- [Deliverability Consulting [FR]](https://mailtrap.io/fr/deliverability-consultation/)\n- [Deliverability Consulting [ES]](https://mailtrap.io/es/deliverability-consultation/)\n- [Do Not Sell or Share My Personal Information](https://mailtrap.io/personal-information-privacy/)\n- [Railsware Products Studio LLC Navigational Information Statement](https://mailtrap.io/navigational-info/)\n- [Mailtrap Deliverability Guide [PT]](https://mailtrap.io/pt/email-deliverability-guide/)\n- [Mailtrap Affiliate Program [DE]](https://mailtrap.io/de/affiliate-program/)\n- [Mailtrap Affiliate Program [IT]](https://mailtrap.io/it/affiliate-program/)\n- [Mailtrap Partner Program for Agencies [UA]](https://mailtrap.io/uk/partner-program-for-agencies/)\n- [Mailtrap Partner Program for Agencies [DE]](https://mailtrap.io/de/partner-program-for-agencies/)\n- [Mailtrap Partner Program for Agencies [IT]](https://mailtrap.io/it/partner-program-for-agencies/)\n- [Mailtrap Partner Program for Agencies [ES]](https://mailtrap.io/es/partner-program-for-agencies/)\n- [Mailtrap Partner Program [UA]](https://mailtrap.io/uk/partnership-program/)\n- [Mailtrap for SMBs [UA]](https://mailtrap.io/uk/for-smbs/)\n- [Mailtrap for SaaS [UA]](https://mailtrap.io/uk/for-saas/)\n- [Mailtrap for EdTech [UA]](https://mailtrap.io/uk/for-edtech/)\n- [Mailtrap for FinTech [UA]](https://mailtrap.io/uk/for-fintech/)\n- [Mailtrap for Travel & Hospitality [UA]](https://mailtrap.io/uk/for-travel-and-hospitality/)\n- [Mailtrap for SMBs [JA]](https://mailtrap.io/ja/for-smbs/)\n- [Mailtrap for SaaS [JA]](https://mailtrap.io/ja/for-saas/)\n- [Mailtrap for EdTech [JA]](https://mailtrap.io/ja/for-edtech/)\n- [Mailtrap for FinTech [JA]](https://mailtrap.io/ja/for-fintech/)\n- [Mailtrap for Travel & Hospitality [JA]](https://mailtrap.io/ja/for-travel-and-hospitality/)\n- [Mailtrap for SMBs [PL]](https://mailtrap.io/pl/for-smbs/)\n- [Mailtrap for SaaS [PL]](https://mailtrap.io/pl/for-saas/)\n- [Mailtrap for EdTech [PL]](https://mailtrap.io/pl/for-edtech/)\n- [Mailtrap for FinTech [PL]](https://mailtrap.io/pl/for-fintech/)\n- [Mailtrap for Travel & Hospitality [PL]](https://mailtrap.io/pl/for-travel-and-hospitality/)\n- [Mailtrap for SMBs [DE]](https://mailtrap.io/de/for-smbs/)\n- [Mailtrap for SaaS [DE]](https://mailtrap.io/de/for-saas/)\n- [Mailtrap for EdTech [DE]](https://mailtrap.io/de/for-edtech/)\n- [Mailtrap for FinTech [DE]](https://mailtrap.io/de/for-fintech/)\n- [Mailtrap for Travel & Hospitality [DE]](https://mailtrap.io/de/for-travel-and-hospitality/)\n- [Mailtrap for SMBs [FR]](https://mailtrap.io/fr/for-smbs/)\n- [Mailtrap for EdTech [FR]](https://mailtrap.io/fr/for-edtech/)\n- [Mailtrap for FinTech [FR]](https://mailtrap.io/fr/for-fintech/)\n- [Mailtrap for Travel & Hospitality [FR]](https://mailtrap.io/fr/for-travel-and-hospitality/)\n- [Mailtrap for SaaS [FR]](https://mailtrap.io/fr/for-saas/)\n- [Mailtrap Partner Program for Agencies [FR]](https://mailtrap.io/fr/partner-program-for-agencies/)\n- [Mailtrap Affiliate Program [FR]](https://mailtrap.io/fr/affiliate-program/)\n- [Mailtrap for EdTech [IT]](https://mailtrap.io/it/for-edtech/)\n- [Mailtrap for Travel & Hospitality [IT]](https://mailtrap.io/it/for-travel-and-hospitality/)\n- [Mailtrap for SMBs [IT]](https://mailtrap.io/it/for-smbs/)\n- [Mailtrap for FinTech [IT]](https://mailtrap.io/it/for-fintech/)\n- [Mailtrap for SaaS [IT]](https://mailtrap.io/it/for-saas/)\n- [Mailtrap for SMBs [ES]](https://mailtrap.io/es/for-smbs/)\n- [Mailtrap for EdTech [ES]](https://mailtrap.io/es/for-edtech/)\n- [Mailtrap for FinTech [ES]](https://mailtrap.io/es/for-fintech/)\n- [Mailtrap for Travel & Hospitality [ES]](https://mailtrap.io/es/for-travel-and-hospitality/)\n- [Mailtrap for SaaS [ES]](https://mailtrap.io/es/for-saas/)\n- [Mailtrap for SMBs [PT]](https://mailtrap.io/pt/for-smbs/)\n- [Mailtrap for SaaS [PT]](https://mailtrap.io/pt/for-saas/)\n- [Mailtrap for EdTech [PT]](https://mailtrap.io/pt/for-edtech/)\n- [Mailtrap for FinTech [PT]](https://mailtrap.io/pt/for-fintech/)\n- [Mailtrap for Travel & Hospitality [PT]](https://mailtrap.io/pt/for-travel-and-hospitality/)\n- [Mailtrap for EdTech](https://mailtrap.io/for-edtech/)\n- [Mailtrap for SMBs](https://mailtrap.io/for-smbs/)\n- [Mailtrap for FinTech](https://mailtrap.io/for-fintech/)\n- [Mailtrap for SaaS](https://mailtrap.io/for-saas/)\n- [Mailtrap for Travel & Hospitality](https://mailtrap.io/for-travel-and-hospitality/)\n- [Brevo migration](https://mailtrap.io/brevo-migration/)\n- [Pricing [JA]](https://mailtrap.io/ja/pricing/)\n- [Pricing [UA]](https://mailtrap.io/uk/pricing/)\n- [Pricing [PL]](https://mailtrap.io/pl/pricing/)\n- [Pricing [DE]](https://mailtrap.io/de/pricing/)\n- [Pricing [IT]](https://mailtrap.io/it/pricing/)\n- [Pricing [FR]](https://mailtrap.io/fr/pricing/)\n- [Pricing [PT]](https://mailtrap.io/pt/pricing/)\n- [Pricing](https://mailtrap.io/pricing/)\n- [Pricing [ES]](https://mailtrap.io/es/pricing/)\n- [Mailtrap Contact Details](https://mailtrap.io/contact-details/)\n- [Resend alternative](https://mailtrap.io/resend-alternative/)\n- [Email Security](https://mailtrap.io/security-and-compliance/)\n- [Become a Partner Form](https://mailtrap.io/become-a-partner/)\n- [Request Integration](https://mailtrap.io/request-integration/)\n- [Mailtrap Integrations](https://mailtrap.io/integrate-with/)\n- [Email MCP Server](https://mailtrap.io/email-mcp-server/)\n- [Mailtrap Deliverability Guide [PL]](https://mailtrap.io/pl/email-deliverability-guide/)\n- [Home page [JA]](https://mailtrap.io/ja/)\n- [Home page [UA]](https://mailtrap.io/uk/)\n- [Home page [FR]](https://mailtrap.io/fr/)\n- [Home page [DE]](https://mailtrap.io/de/)\n- [Home page [PL]](https://mailtrap.io/pl/)\n- [Home page [IT]](https://mailtrap.io/it/)\n- [Home page [PT]](https://mailtrap.io/pt/)\n- [Home page [ES]](https://mailtrap.io/es/)\n- [Home page](https://mailtrap.io/)\n- [Mailtrap Deliverability Guide [DE]](https://mailtrap.io/de/deliverability-guide/)\n- [Mailtrap Deliverability Guide [IT]](https://mailtrap.io/it/email-deliverability-guide/)\n- [Mailtrap Deliverability Guide [JA]](https://mailtrap.io/ja/email-deliverability-guide/)\n- [DMARC Checker](https://mailtrap.io/free-dmarc-record-checker/)\n- [IP Blocklist Checker](https://mailtrap.io/free-ip-blacklist-checker/)\n- [Domain Blocklist Checker](https://mailtrap.io/free-domain-blacklist-checker/)\n- [Mailtrap Affiliate Program [ES]](https://mailtrap.io/es/affiliate-program/)\n- [Mailtrap Partner Program [DE]](https://mailtrap.io/de/partnership-program/)\n- [Mailtrap Partnership Program [IT]](https://mailtrap.io/it/partnership-program/)\n- [Mailtrap Partner Program [FR]](https://mailtrap.io/fr/partnership-program/)\n- [Mailtrap Partner Program [ES]](https://mailtrap.io/es/partnership-program/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [PL]](https://mailtrap.io/pl/for-multi-tenant-saas-and-systems/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [DE]](https://mailtrap.io/de/for-multi-tenant-saas-and-systems/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [IT]](https://mailtrap.io/it/for-multi-tenant-saas-and-systems/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [FR]](https://mailtrap.io/fr/for-multi-tenant-saas-and-systems/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [ES]](https://mailtrap.io/es/for-multi-tenant-saas-and-systems/)\n- [Mailtrap for Software Houses [UA]](https://mailtrap.io/uk/for-software-houses/)\n- [Mailtrap for Software Houses [JA]](https://mailtrap.io/ja/for-software-houses/)\n- [Mailtrap for Software Houses [PL]](https://mailtrap.io/pl/for-software-houses/)\n- [Mailtrap for Software Houses [DE]](https://mailtrap.io/de/for-software-houses/)\n- [Mailtrap for Software Houses [IT]](https://mailtrap.io/it/for-software-houses/)\n- [Mailtrap for Software Houses [FR]](https://mailtrap.io/fr/for-software-houses/)\n- [Mailtrap for Software Houses [ES]](https://mailtrap.io/es/for-software-houses/)\n- [Mailtrap for Software Houses [PT]](https://mailtrap.io/pt/for-software-houses/)\n- [Mailtrap Deliverability Guide [FR]](https://mailtrap.io/fr/email-deliverability-guide/)\n- [DKIM Checker](https://mailtrap.io/free-dkim-record-checker/)\n- [SPF Checker](https://mailtrap.io/free-spf-record-checker/)\n- [Mailtrap Deliverability Guide [ES]](https://mailtrap.io/es/email-deliverability-guide/)\n- [Mailtrap Affiliate Program [PL]](https://mailtrap.io/pl/affiliate-program/)\n- [Mailtrap Partner Program for Agencies [PL]](https://mailtrap.io/pl/partner-program-for-agencies/)\n- [Mailtrap Partner Program [PL]](https://mailtrap.io/pl/partnership-program/)\n- [Free SMTP Server](https://mailtrap.io/free-smtp-server/)\n- [Postmark alternative [JA]](https://mailtrap.io/ja/postmark-alternative/)\n- [Postmark alternative [PL]](https://mailtrap.io/pl/postmark-alternative/)\n- [Postmark alternative [DE]](https://mailtrap.io/de/postmark-alternative/)\n- [Postmark alternative [IT]](https://mailtrap.io/it/postmark-alternative/)\n- [Postmark alternative [FR]](https://mailtrap.io/fr/postmark-alternative/)\n- [Postmark alternative [ES]](https://mailtrap.io/es/postmark-alternative/)\n- [Postmark alternative [PT]](https://mailtrap.io/pt/postmark-alternative/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [JA]](https://mailtrap.io/ja/for-multi-tenant-saas-and-systems/)\n- [Mailtrap Partner Program for Agencies [JA]](https://mailtrap.io/ja/partner-program-for-agencies/)\n- [Mailtrap Affiliate Program [JA]](https://mailtrap.io/ja/affiliate-program/)\n- [Mailtrap Partner Program [JA]](https://mailtrap.io/ja/partnership-program/)\n- [Mailtrap for Multi-Tenant SaaS and Systems [PT]](https://mailtrap.io/pt/for-multi-tenant-saas-and-systems/)\n- [Mailtrap Partner Program for Agencies [PT]](https://mailtrap.io/pt/partner-program-for-agencies/)\n- [Mailtrap Affiliate Program [PT]](https://mailtrap.io/pt/affiliate-program/)\n- [Mailtrap Partner Program [PT]](https://mailtrap.io/pt/partnership-program/)\n- [Mailtrap Deliverability Guide](https://mailtrap.io/email-deliverability-guide/)\n- [DIGITAL OPERATIONAL RESILIENCE ADDENDUM](https://mailtrap.io/dora/)\n- [Postmark migration [UA]](https://mailtrap.io/uk/postmark-migration/)\n- [Mailtrap Affiliate Program [UA]](https://mailtrap.io/uk/affiliate-program/)\n- [Postmark alternative [UA]](https://mailtrap.io/uk/postmark-alternative/)\n- [Mailtrap Affiliate Program](https://mailtrap.io/affiliate-program/)\n- [Mailtrap Partner Program](https://mailtrap.io/partnership-program/)\n- [Mailtrap Partner Program for Agencies](https://mailtrap.io/partner-program-for-agencies/)\n- [Postmark migration](https://mailtrap.io/postmark-migration/)\n- [Acceptable Use Policy](https://mailtrap.io/acceptable-use-policy/)\n- [Postmark alternative](https://mailtrap.io/postmark-alternative/)\n- [Email Marketing [UA]](https://mailtrap.io/uk/email-marketing/)\n- [Onboarding Assistance [PL]](https://mailtrap.io/pl/mailtrap-onboarding-assistance/)\n- [Actionable Analytics [PL]](https://mailtrap.io/pl/actionable-analytics/)\n- [Campaign Scheduling [PL]](https://mailtrap.io/pl/campaign-scheduling/)\n- [Mailtrap Contacts [PL]](https://mailtrap.io/pl/mailtrap-contacts/)\n- [Email Templates [PL]](https://mailtrap.io/pl/email-templates/)\n- [Email Template Builder [PL]](https://mailtrap.io/pl/email-builder/)\n- [Email Marketing [PL]](https://mailtrap.io/pl/email-marketing/)\n- [Spam Checker](https://mailtrap.io/email-spam-checker/)\n- [Onboarding Assistance [IT]](https://mailtrap.io/it/mailtrap-onboarding-assistance/)\n- [Onboarding Assistance [FR]](https://mailtrap.io/fr/mailtrap-onboarding-assistance/)\n- [Onboarding Assistance [ES]](https://mailtrap.io/es/mailtrap-onboarding-assistance/)\n- [Deliverability Consulting [DE]](https://mailtrap.io/de/deliverability-consultation/)\n- [Onboarding Assistance [DE]](https://mailtrap.io/de/mailtrap-onboarding-assistance/)\n- [Email Marketing [DE]](https://mailtrap.io/de/email-marketing/)\n- [Actionable Analytics [DE]](https://mailtrap.io/de/actionable-analytics/)\n- [Campaign Scheduling [DE]](https://mailtrap.io/de/campaign-scheduling/)\n- [Mailtrap Contacts [DE]](https://mailtrap.io/de/mailtrap-contacts/)\n- [Email Templates [DE]](https://mailtrap.io/de/email-templates/)\n- [Email Template Builder [DE]](https://mailtrap.io/de/email-builder/)\n- [Deliverability Consulting [PT]](https://mailtrap.io/pt/deliverability-consultation/)\n- [Onboarding Assistance [PT]](https://mailtrap.io/pt/mailtrap-onboarding-assistance/)\n- [Deliverability Consulting [JA]](https://mailtrap.io/ja/deliverability-consultation/)\n- [Onboarding Assistance [JA]](https://mailtrap.io/ja/mailtrap-onboarding-assistance/)\n- [Email Marketing [JA]](https://mailtrap.io/ja/email-marketing/)\n- [Actionable Analytics [JA]](https://mailtrap.io/ja/actionable-analytics/)\n- [Campaign Scheduling [JA]](https://mailtrap.io/ja/campaign-scheduling/)\n- [Mailtrap Contacts [JA]](https://mailtrap.io/ja/mailtrap-contacts/)\n- [Email Template Builder [JA]](https://mailtrap.io/ja/email-builder/)\n- [Email Templates [JA]](https://mailtrap.io/ja/email-templates/)\n- [Deliverability Consulting [UA]](https://mailtrap.io/uk/deliverability-consultation/)\n- [Email Templates [UA]](https://mailtrap.io/uk/email-templates/)\n- [Onboarding Assistance [UA]](https://mailtrap.io/uk/mailtrap-onboarding-assistance/)\n- [Actionable Analytics [UA]](https://mailtrap.io/uk/analytics/)\n- [Campaign Scheduling [UA]](https://mailtrap.io/uk/campaign-scheduling/)\n- [Mailtrap Contacts [UA]](https://mailtrap.io/uk/mailtrap-contacts/)\n- [Email Template Builder [UA]](https://mailtrap.io/uk/email-builder/)\n- [Deliverability Consulting](https://mailtrap.io/deliverability-consultation/)\n- [Email Marketing [IT]](https://mailtrap.io/it/email-marketing/)\n- [Email Marketing [FR]](https://mailtrap.io/fr/email-marketing/)\n- [Email Templates [IT]](https://mailtrap.io/it/email-templates/)\n- [Campaign Scheduling [IT]](https://mailtrap.io/it/campaign-scheduling/)\n- [Mailtrap Contacts [IT]](https://mailtrap.io/it/mailtrap-contacts/)\n- [Email Template Builder [IT]](https://mailtrap.io/it/email-builder/)\n- [Actionable Analytics [IT]](https://mailtrap.io/it/actionable-analytics/)\n- [Actionable Analytics [FR]](https://mailtrap.io/fr/actionable-analytics/)\n- [Campaign Scheduling [FR]](https://mailtrap.io/fr/campaign-scheduling/)\n- [Mailtrap Contacts [FR]](https://mailtrap.io/fr/mailtrap-contacts/)\n- [Email Templates [FR]](https://mailtrap.io/fr/email-templates/)\n- [Email Template Builder [FR]](https://mailtrap.io/fr/email-builder/)\n- [Email Marketing [ES]](https://mailtrap.io/es/email-marketing/)\n- [Campaign Scheduling [ES]](https://mailtrap.io/es/campaign-scheduling/)\n- [Email Template Builder [ES]](https://mailtrap.io/es/email-builder/)\n- [Email Templates [ES]](https://mailtrap.io/es/email-templates/)\n- [Mailtrap Contacts [ES]](https://mailtrap.io/es/mailtrap-contacts/)\n- [Actionable Analytics [ES]](https://mailtrap.io/es/actionable-analytics/)\n- [Email Marketing [PT]](https://mailtrap.io/pt/email-marketing/)\n- [Campaign Scheduling [PT]](https://mailtrap.io/pt/campaign-scheduling/)\n- [Mailtrap Contacts [PT]](https://mailtrap.io/pt/mailtrap-contacts/)\n- [Email Templates [PT]](https://mailtrap.io/pt/email-templates/)\n- [Email Template Builder [PT]](https://mailtrap.io/pt/email-builder/)\n- [Actionable Analytics [PT]](https://mailtrap.io/pt/actionable-analytics/)\n- [Email Template Builder](https://mailtrap.io/email-builder/)\n- [Email Templates](https://mailtrap.io/templates/)\n- [Onboarding Assistance](https://mailtrap.io/mailtrap-onboarding-assistance/)\n- [Campaign Scheduling](https://mailtrap.io/campaign-scheduling/)\n- [Actionable Analytics](https://mailtrap.io/actionable-analytics/)\n- [Mailtrap Contacts](https://mailtrap.io/mailtrap-contacts/)\n- [Mailtrap Migration Guide [UA]](https://mailtrap.io/uk/mailtrap-migration-guide/)\n- [Mailtrap for Multi-Tenant SaaS and Systems](https://mailtrap.io/for-multi-tenant-saas-and-systems/)\n- [Mailtrap Migration Guide [PL]](https://mailtrap.io/pl/mailtrap-migration-guide/)\n- [Mailtrap Migration Guide [ES]](https://mailtrap.io/es/mailtrap-migration-guide/)\n- [Mailtrap Migration Guide [DE]](https://mailtrap.io/de/mailtrap-migration-guide/)\n- [Mailtrap Migration Guide [FR]](https://mailtrap.io/fr/mailtrap-migration-guide/)\n- [Mailtrap Migration Guide [IT]](https://mailtrap.io/it/mailtrap-migration-guide/)\n- [Mailtrap Migration Guide [PT]](https://mailtrap.io/pt/mailtrap-migration-guide/)\n- [Mailtrap Migration Guide [JA]](https://mailtrap.io/ja/mailtrap-migration-guide/)\n- [Migration forms [PL]](https://mailtrap.io/pl/migration/)\n- [Talk to Sales [PL]](https://mailtrap.io/pl/talk-to-sales/)\n- [Mailtrap Migration Guide](https://mailtrap.io/mailtrap-migration-guide/)\n- [Talk to Sales [UA]](https://mailtrap.io/uk/talk-to-sales/)\n- [Migration forms [UA]](https://mailtrap.io/uk/migration/)\n- [Talk to Sales [DE]](https://mailtrap.io/de/talk-to-sales/)\n- [Migration forms [DE]](https://mailtrap.io/de/migration/)\n- [Migration forms [JA]](https://mailtrap.io/ja/migration/)\n- [Talk to Sales [JA]](https://mailtrap.io/ja/talk-to-sales/)\n- [Migration forms [IT]](https://mailtrap.io/it/migration/)\n- [Talk to Sales [IT]](https://mailtrap.io/it/talk-to-sales/)\n- [Migration forms [FR]](https://mailtrap.io/fr/migration/)\n- [Talk to Sales [FR]](https://mailtrap.io/fr/talk-to-sales/)\n- [Talk to Sales [ES]](https://mailtrap.io/es/talk-to-sales/)\n- [Migration forms [ES]](https://mailtrap.io/es/migration/)\n- [Migration forms [PT]](https://mailtrap.io/pt/migration/)\n- [Talk to Sales [PT]](https://mailtrap.io/pt/talk-to-sales/)\n- [Migration forms](https://mailtrap.io/migration/)\n- [SMTP API](https://mailtrap.io/smtp-api/)\n- [Talk to Mailtrap Team](https://mailtrap.io/talk-to-sales/)\n- [Transactional Email API](https://mailtrap.io/transactional-email-api/)\n- [Email Marketing](https://mailtrap.io/email-marketing/)\n- [Transactional SMTP Service](https://mailtrap.io/transactional-smtp-service/)\n- [Mailtrap for Software Houses](https://mailtrap.io/for-software-houses/)\n- [SMTP service [DE]](https://mailtrap.io/de/smtp-service/)\n- [Spam Checker [DE]](https://mailtrap.io/de/email-spam-checker/)\n- [Bulk Email Service [DE]](https://mailtrap.io/de/bulk-email-service/)\n- [Amazon SES alternative [DE]](https://mailtrap.io/de/amazon-ses-alternative/)\n- [Mailgun alternative [DE]](https://mailtrap.io/de/mailgun-alternative/)\n- [HubSpot Transactional Emails alternative [DE]](https://mailtrap.io/de/hubspot-alternative/)\n- [Mandrill alternative [DE]](https://mailtrap.io/de/mandrill-alternative/)\n- [SendGrid alternative [DE]](https://mailtrap.io/de/sendgrid-alternative/)\n- [Email API [DE]](https://mailtrap.io/de/email-api/)\n- [Email Sending [DE]](https://mailtrap.io/de/email-sending/)\n- [Email Sandbox [DE]](https://mailtrap.io/de/email-sandbox/)\n- [Testing API [JA]](https://mailtrap.io/ja/automated-email-testing/)\n- [Spam Checker [JA]](https://mailtrap.io/ja/email-spam-checker/)\n- [SMTP service [JA]](https://mailtrap.io/ja/smtp-service/)\n- [QA Automation [JA]](https://mailtrap.io/ja/qa-automation/)\n- [HTML Checker [JA]](https://mailtrap.io/ja/html-checker/)\n- [Fake SMTP Server [JA]](https://mailtrap.io/ja/fake-smtp-server/)\n- [Email API [JA]](https://mailtrap.io/ja/email-api/)\n- [Bulk Email Service [JA]](https://mailtrap.io/ja/bulk-email-service/)\n- [Email Sending [JA]](https://mailtrap.io/ja/email-sending/)\n- [Email Sandbox [JA]](https://mailtrap.io/ja/email-sandbox/)\n- [SendGrid migration [JA]](https://mailtrap.io/ja/sendgrid-migration/)\n- [Mandrill migration [JA]](https://mailtrap.io/ja/mandrill-migration/)\n- [Testing API [DE]](https://mailtrap.io/de/automated-email-testing/)\n- [HTML Checker [DE]](https://mailtrap.io/de/html-email-checker/)\n- [Fake SMTP Server [DE]](https://mailtrap.io/de/fake-smtp-server/)\n- [QA Automation [DE]](https://mailtrap.io/de/qa-automation/)\n- [Mailgun migration [DE]](https://mailtrap.io/de/mailgun-migration/)\n- [Amazon SES migration [DE]](https://mailtrap.io/de/amazon-ses-migration/)\n- [SendGrid migration [DE]](https://mailtrap.io/de/sendgrid-migration/)\n- [Mandrill migration [DE]](https://mailtrap.io/de/mandrill-migration/)\n- [Amazon SES alternative [JA]](https://mailtrap.io/ja/amazon-ses-alternative/)\n- [Sendgrid alternative [JA]](https://mailtrap.io/ja/sendgrid-alternative/)\n- [HubSpot Transactional Emails alternative [JA]](https://mailtrap.io/ja/hubspot-alternative/)\n- [Mandrill alternative [JA]](https://mailtrap.io/ja/mandrill-alternative/)\n- [Mailgun alternative [JA]](https://mailtrap.io/ja/mailgun-alternative/)\n- [Mailgun migration [JA]](https://mailtrap.io/ja/mailgun-migration/)\n- [Amazon SES migration [JA]](https://mailtrap.io/ja/amazon-ses-migration/)\n- [HubSpot Transactional Emails alternative [IT]](https://mailtrap.io/it/hubspot-alternative/)\n- [HubSpot Transactional Emails alternative [UK]](https://mailtrap.io/uk/hubspot-alternative/)\n- [HubSpot Transactional Emails alternative [PL]](https://mailtrap.io/pl/hubspot-alternative/)\n- [HubSpot Transactional Emails alternative [FR]](https://mailtrap.io/fr/hubspot-alternative/)\n- [HubSpot Transactional Emails alternative [ES]](https://mailtrap.io/es/hubspot-alternative/)\n- [HubSpot Transactional Emails alternative [PT]](https://mailtrap.io/pt/hubspot-alternative/)\n- [HubSpot Transactional Emails alternative](https://mailtrap.io/hubspot-alternative/)\n- [Email Sandbox [FR]](https://mailtrap.io/fr/email-sandbox/)\n- [Email Sending [FR]](https://mailtrap.io/fr/email-sending/)\n- [Bulk Email Service [FR]](https://mailtrap.io/fr/bulk-email-service/)\n- [SMTP service [FR]](https://mailtrap.io/fr/smtp-service/)\n- [Email API [FR]](https://mailtrap.io/fr/email-api/)\n- [HTML Checker [FR]](https://mailtrap.io/fr/html-email-checker/)\n- [Fake SMTP Server [FR]](https://mailtrap.io/fr/fake-smtp-server/)\n- [QA Automation [FR]](https://mailtrap.io/fr/qa-automation/)\n- [Spam Checker [FR]](https://mailtrap.io/fr/email-spam-checker/)\n- [Testing API [FR]](https://mailtrap.io/fr/automated-email-testing/)\n- [SendGrid migration [FR]](https://mailtrap.io/fr/sendgrid-migration/)\n- [Mailgun migration [FR]](https://mailtrap.io/fr/mailgun-migration/)\n- [Amazon SES migration [FR]](https://mailtrap.io/fr/amazon-ses-migration/)\n- [Mandrill migration [FR]](https://mailtrap.io/fr/mandrill-migration/)\n- [Amazon SES alternative [FR]](https://mailtrap.io/fr/amazon-ses-alternative/)\n- [SendGrid alternative [FR]](https://mailtrap.io/fr/sendgrid-alternative/)\n- [Mailgun alternative [FR]](https://mailtrap.io/fr/mailgun-alternative/)\n- [Mandrill alternative [FR]](https://mailtrap.io/fr/mandrill-alternative/)\n- [Email Sending [UK]](https://mailtrap.io/uk/email-sending/)\n- [Email Sandbox [UK]](https://mailtrap.io/uk/email-sandbox/)\n- [Amazon SES alternative [UK]](https://mailtrap.io/uk/amazon-ses-alternative/)\n- [Sendgrid alternative [UK]](https://mailtrap.io/uk/sendgrid-alternative/)\n- [Mandrill alternative [UK]](https://mailtrap.io/uk/mandrill-alternative/)\n- [Mailgun alternative [UK]](https://mailtrap.io/uk/mailgun-alternative/)\n- [Amazon SES migration [UK]](https://mailtrap.io/uk/amazon-ses-migration/)\n- [Mandrill migration [UK]](https://mailtrap.io/uk/mandrill-migration/)\n- [SendGrid migration [UK]](https://mailtrap.io/uk/sendgrid-migration/)\n- [Mailgun migration [UK]](https://mailtrap.io/uk/mailgun-migration/)\n- [Spam Checker [UK]](https://mailtrap.io/uk/email-spam-checker/)\n- [SMTP service [UK]](https://mailtrap.io/uk/smtp-service/)\n- [Testing API [UK]](https://mailtrap.io/uk/automated-email-testing/)\n- [HTML Checker [UK]](https://mailtrap.io/uk/html-email-checker/)\n- [Fake SMTP Server [UK]](https://mailtrap.io/uk/fake-smtp-server/)\n- [Email API [UK]](https://mailtrap.io/uk/email-api/)\n- [Bulk Email Service [UK]](https://mailtrap.io/uk/bulk-email-service/)\n- [QA Automation [UK]](https://mailtrap.io/uk/qa-automation/)\n- [Bulk Email Service [IT]](https://mailtrap.io/it/bulk-email-service/)\n- [SMTP service [IT]](https://mailtrap.io/it/smtp-service/)\n- [Email API [IT]](https://mailtrap.io/it/email-api/)\n- [QA Automation [IT]](https://mailtrap.io/it/qa-automation/)\n- [Testing API [IT]](https://mailtrap.io/it/automated-email-testing/)\n- [Spam Checker [IT]](https://mailtrap.io/it/email-spam-checker/)\n- [HTML Checker [IT]](https://mailtrap.io/it/html-email-checker/)\n- [Fake SMTP Server [IT]](https://mailtrap.io/it/fake-smtp-server/)\n- [Amazon SES alternative [IT]](https://mailtrap.io/it/amazon-ses-alternative/)\n- [Mandrill alternative [IT]](https://mailtrap.io/it/mandrill-alternative/)\n- [Mailgun alternative [IT]](https://mailtrap.io/it/mailgun-alternative/)\n- [Sendgrid alternative [IT]](https://mailtrap.io/it/sendgrid-alternative/)\n- [Amazon SES migration [IT]](https://mailtrap.io/it/amazon-ses-migration/)\n- [Mandrill migration [IT]](https://mailtrap.io/it/mandrill-migration/)\n- [Mailgun migration [IT]](https://mailtrap.io/it/mailgun-migration/)\n- [SendGrid migration [IT]](https://mailtrap.io/it/sendgrid-migration/)\n- [SMTP service [PL]](https://mailtrap.io/pl/smtp-service/)\n- [Bulk Email Service [PL]](https://mailtrap.io/pl/bulk-email-service/)\n- [Email API [PL]](https://mailtrap.io/pl/email-api/)\n- [HTML Checker [PL]](https://mailtrap.io/pl/html-email-checker/)\n- [Spam Checker [PL]](https://mailtrap.io/pl/email-spam-checker/)\n- [Testing API [PL]](https://mailtrap.io/pl/automated-email-testing/)\n- [QA Automation [PL]](https://mailtrap.io/pl/qa-automation/)\n- [Fake SMTP Server [PL]](https://mailtrap.io/pl/fake-smtp-server/)\n- [Email Sandbox [IT]](https://mailtrap.io/it/email-sandbox/)\n- [Email Sending [IT]](https://mailtrap.io/it/email-sending/)\n- [Sendgrid alternative [PL]](https://mailtrap.io/pl/sendgrid-alternative/)\n- [Mailgun alternative [PL]](https://mailtrap.io/pl/mailgun-alternative/)\n- [Mandrill alternative [PL]](https://mailtrap.io/pl/mandrill-alternative/)\n- [Amazon SES alternative [PL]](https://mailtrap.io/pl/amazon-ses-alternative/)\n- [Amazon SES migration [PL]](https://mailtrap.io/pl/amazon-ses-migration/)\n- [Mandrill migration [PL]](https://mailtrap.io/pl/mandrill-migration/)\n- [Mailgun migration [PL]](https://mailtrap.io/pl/mailgun-migration/)\n- [SendGrid migration [PL]](https://mailtrap.io/pl/sendgrid-migration/)\n- [Testing API [PT]](https://mailtrap.io/pt/automated-email-testing/)\n- [Spam Checker [PT]](https://mailtrap.io/pt/email-spam-checker/)\n- [QA Automation [PT]](https://mailtrap.io/pt/qa-automation/)\n- [HTML Checker [PT]](https://mailtrap.io/pt/html-email-checker/)\n- [Fake SMTP Server [PT]](https://mailtrap.io/pt/fake-smtp-server/)\n- [SMTP service [PT]](https://mailtrap.io/pt/smtp-service/)\n- [Email API [PT]](https://mailtrap.io/pt/email-api/)\n- [Bulk Email Service [PT]](https://mailtrap.io/pt/bulk-email-service/)\n- [SendGrid migration [PT]](https://mailtrap.io/pt/sendgrid-migration/)\n- [Sendgrid alternative [PT]](https://mailtrap.io/pt/sendgrid-alternative/)\n- [Mandrill migration [PT]](https://mailtrap.io/pt/mandrill-migration/)\n- [Mandrill alternative [PT]](https://mailtrap.io/pt/mandrill-alternative/)\n- [Mailgun migration [PT]](https://mailtrap.io/pt/mailgun-migration/)\n- [Mailgun alternative [PT]](https://mailtrap.io/pt/mailgun-alternative/)\n- [Amazon SES migration [PT]](https://mailtrap.io/pt/amazon-ses-migration/)\n- [Amazon SES alternative [PT]](https://mailtrap.io/pt/amazon-ses-alternative/)\n- [Email Sending [PT]](https://mailtrap.io/pt/email-sending/)\n- [Email Sandbox [PT]](https://mailtrap.io/pt/email-sandbox/)\n- [Testing API [ES]](https://mailtrap.io/es/automated-email-testing/)\n- [Spam Checker [ES]](https://mailtrap.io/es/email-spam-checker/)\n- [QA Automation [ES]](https://mailtrap.io/es/qa-automation/)\n- [Fake SMTP Server [ES]](https://mailtrap.io/es/fake-smtp-server/)\n- [HTML Checker [ES]](https://mailtrap.io/es/html-email-checker/)\n- [SMTP service [ES]](https://mailtrap.io/es/smtp-service/)\n- [Bulk Email Service [ES]](https://mailtrap.io/es/bulk-email-service/)\n- [Email API [ES]](https://mailtrap.io/es/email-api/)\n- [Amazon SES migration [ES]](https://mailtrap.io/es/amazon-ses-migration/)\n- [Amazon SES alternative [ES]](https://mailtrap.io/es/amazon-ses-alternative/)\n- [Mailgun alternative [ES]](https://mailtrap.io/es/mailgun-alternative/)\n- [Mailgun migration [ES]](https://mailtrap.io/es/mailgun-migration/)\n- [Mandrill alternative [ES]](https://mailtrap.io/es/mandrill-alternative/)\n- [Mandrill migration [ES]](https://mailtrap.io/es/mandrill-migration/)\n- [Sendgrid alternative [ES]](https://mailtrap.io/es/sendgrid-alternative/)\n- [SendGrid migration [ES]](https://mailtrap.io/es/sendgrid-migration/)\n- [Email Sending [ES]](https://mailtrap.io/es/email-sending/)\n- [Email Sandbox [ES]](https://mailtrap.io/es/email-sandbox/)\n- [Email Sending [PL]](https://mailtrap.io/pl/email-sending/)\n- [Email Sandbox [PL]](https://mailtrap.io/pl/email-sandbox/)\n- [An Important Notice Regarding the Use of Mailtrap (for Commercial Purposes)](https://mailtrap.io/mailtrap-use/)\n- [Bulk Email Service](https://mailtrap.io/bulk-email-service/)\n- [SMTP Service](https://mailtrap.io/smtp-service/)\n- [Mailgun alternative](https://mailtrap.io/mailgun-alternative/)\n- [Sendgrid alternative](https://mailtrap.io/sendgrid-alternative/)\n- [Mandrill alternative](https://mailtrap.io/mandrill-alternative/)\n- [Amazon SES alternative](https://mailtrap.io/amazon-ses-alternative/)\n- [Mailgun migration](https://mailtrap.io/mailgun-migration/)\n- [Amazon SES migration](https://mailtrap.io/amazon-ses-migration/)\n- [Mandrill migration](https://mailtrap.io/mandrill-migration/)\n- [SendGrid migration](https://mailtrap.io/sendgrid-migration/)\n- [Email Sending](https://mailtrap.io/email-sending/)\n- [Email API](https://mailtrap.io/email-api/)\n- [Email Sandbox](https://mailtrap.io/email-sandbox/)\n- [Fake SMTP Server](https://mailtrap.io/fake-smtp-server/)\n- [Testing API](https://mailtrap.io/automated-email-testing/)\n- [QA Automation](https://mailtrap.io/qa-automation/)\n- [Mailtrap Blog](https://mailtrap.io/blog/)\n- [Changelog](https://mailtrap.io/changelog/)\n- [HTML Checker](https://mailtrap.io/html-email-checker/)\n\n\n## Case Studies\n\n- [How The Software House Approaches Email Development](https://mailtrap.io/case-studies/the-software-house/)\n- [How Calendly Streamlines Email Testing with Mailtrap](https://mailtrap.io/case-studies/calendly/)\n- [How Kinsta's Developers, Designers, and QAs Collaborate On Emails](https://mailtrap.io/case-studies/kinsta/)\n\n\n## Integrations\n\n- [Apache Airflow](https://mailtrap.io/integrate-with/apache-airflow/)\n- [Augment Code](https://mailtrap.io/integrate-with/augment-code/)\n- [GitHub Copilot](https://mailtrap.io/integrate-with/github-copilot/)\n- [Google Antigravity](https://mailtrap.io/integrate-with/antigravity/)\n- [Anymail](https://mailtrap.io/integrate-with/anymail/)\n- [OpenClaw](https://mailtrap.io/integrate-with/openclaw/)\n- [Heroku](https://mailtrap.io/pl/integrate-with/heroku/)\n- [Heroku](https://mailtrap.io/de/integrate-with/heroku/)\n- [Heroku](https://mailtrap.io/it/integrate-with/heroku/)\n- [Heroku](https://mailtrap.io/fr/integrate-with/heroku/)\n- [Heroku](https://mailtrap.io/es/integrate-with/heroku/)\n- [Heroku](https://mailtrap.io/pt/integrate-with/heroku/)\n- [Zapier](https://mailtrap.io/ja/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/uk/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/pl/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/de/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/it/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/fr/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/es/integrate-with/zapier/)\n- [Zapier](https://mailtrap.io/pt/integrate-with/zapier/)\n- [Post SMTP](https://mailtrap.io/integrate-with/post-smtp/)\n- [EmailElement](https://mailtrap.io/integrate-with/emailelement/)\n- [.NET](https://mailtrap.io/integrate-with/dotnet/)\n- [Ruby on Rails](https://mailtrap.io/integrate-with/ruby-on-rails/)\n- [Nodemailer](https://mailtrap.io/integrate-with/nodemailer/)\n- [Laravel](https://mailtrap.io/integrate-with/laravel/)\n- [Symfony](https://mailtrap.io/integrate-with/symfony/)\n- [Java](https://mailtrap.io/integrate-with/java/)\n- [Elixir](https://mailtrap.io/integrate-with/elixir/)\n- [Ruby](https://mailtrap.io/integrate-with/ruby/)\n- [Python](https://mailtrap.io/integrate-with/python/)\n- [Node.js](https://mailtrap.io/integrate-with/nodejs/)\n- [PHP](https://mailtrap.io/integrate-with/php/)\n- [Tabular](https://mailtrap.io/integrate-with/tabular/)\n- [Retool](https://mailtrap.io/integrate-with/retool/)\n- [Vercel](https://mailtrap.io/integrate-with/vercel/)\n- [Stripo](https://mailtrap.io/integrate-with/stripo/)\n- [VS Code](https://mailtrap.io/integrate-with/vs-code/)\n- [Cursor](https://mailtrap.io/integrate-with/cursor/)\n- [V0](https://mailtrap.io/integrate-with/v0-dev/)\n- [Windsurf ](https://mailtrap.io/integrate-with/windsurf/)\n- [Claude Code](https://mailtrap.io/integrate-with/claude-code/)\n- [Bolt AI](https://mailtrap.io/integrate-with/bolt-new/)\n- [Lovable](https://mailtrap.io/integrate-with/lovable/)\n- [Supabase](https://mailtrap.io/integrate-with/supabase/)\n- [n8n.io](https://mailtrap.io/integrate-with/n8n/)\n- [Make](https://mailtrap.io/integrate-with/make/)\n- [Mailtrap MCP Server](https://mailtrap.io/integrate-with/mcp-server/)\n- [Heroku](https://mailtrap.io/integrate-with/heroku/)\n- [Zapier](https://mailtrap.io/integrate-with/zapier/)",
  "emergingProtocols": {
    "oauthDiscovery": {
      "exists": false,
      "url": "https://mailtrap.io/.well-known/oauth-authorization-server"
    },
    "mcpServerCard": {
      "exists": false,
      "url": "https://mailtrap.io/.well-known/mcp.json"
    },
    "a2aAgentCard": {
      "exists": false,
      "url": "https://mailtrap.io/.well-known/agent.json"
    },
    "count": 0
  },
  "snippets": [
    {
      "id": "add_markdown_negotiation",
      "title": "Support Markdown for Agents",
      "description": "Let AI agents request a clean Markdown version of any page via content negotiation, .md alternate URLs, link tags or Link headers.",
      "language": "html",
      "code": "<!-- Mechanism 3: link tag advertising the .md alternate -->\n<link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">",
      "filename": "<head>",
      "stacks": [
        {
          "id": "html",
          "label": "HTML <head>",
          "language": "html",
          "filename": "<head>",
          "code": "<!-- Mechanism 3: link tag advertising the .md alternate -->\n<link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">"
        },
        {
          "id": "express",
          "label": "Express",
          "language": "javascript",
          "filename": "server.js",
          "code": "// Mechanisms 1 + 4: content negotiation + Link header\napp.get('/page', (req, res) => {\n  res.setHeader('Vary', 'Accept');\n  res.setHeader('Link', '</page.md>; rel=\"alternate\"; type=\"text/markdown\"');\n  if ((req.headers.accept || '').includes('text/markdown')) {\n    res.type('text/markdown; charset=utf-8');\n    return res.send(renderMarkdown('page'));\n  }\n  res.render('page');\n});"
        },
        {
          "id": "fastify",
          "label": "Fastify",
          "language": "javascript",
          "filename": "server.js",
          "code": "// Mechanisms 1 + 4: content negotiation + Link header\nfastify.get('/page', async (req, reply) => {\n  reply.header('Vary', 'Accept');\n  reply.header('Link', '</page.md>; rel=\"alternate\"; type=\"text/markdown\"');\n  if ((req.headers.accept || '').includes('text/markdown')) {\n    return reply.type('text/markdown; charset=utf-8').send(renderMarkdown('page'));\n  }\n  return reply.view('/page.ejs');\n});"
        },
        {
          "id": "nextjs",
          "label": "Next.js",
          "language": "typescript",
          "filename": "app/page/route.ts",
          "code": "// Next.js App Router — Route Handler returning Markdown\nimport { NextRequest } from 'next/server';\nimport { renderMarkdown } from '@/lib/md';\nexport async function GET(req: NextRequest) {\n  const accept = req.headers.get('accept') || '';\n  if (accept.includes('text/markdown')) {\n    return new Response(await renderMarkdown('page'), {\n      headers: {\n        'Content-Type': 'text/markdown; charset=utf-8',\n        'Vary': 'Accept',\n      },\n    });\n  }\n  // Fall through to the page component\n  return new Response(null, { status: 404 });\n}"
        },
        {
          "id": "wordpress",
          "label": "WordPress",
          "language": "php",
          "filename": "functions.php",
          "code": "<?php\n// Mechanism 1: respond to Accept: text/markdown on the same URL\nadd_action('template_redirect', function () {\n    if (!is_singular()) return;\n    $accept = $_SERVER['HTTP_ACCEPT'] ?? '';\n    if (strpos($accept, 'text/markdown') === false) return;\n    header('Content-Type: text/markdown; charset=utf-8');\n    header('Vary: Accept');\n    $post = get_queried_object();\n    echo \"# \" . get_the_title($post) . \"\\n\\n\";\n    echo wp_strip_all_tags(apply_filters('the_content', $post->post_content));\n    exit;\n});"
        },
        {
          "id": "static",
          "label": "Hugo / Jekyll / Astro",
          "language": "txt",
          "filename": "static/page.md",
          "code": "# Mechanism 2: serve .md alongside .html\n# Hugo: place page.md in /static/ — built unchanged\n# Jekyll: drop page.md in /assets/ — copied as-is\n# Astro: src/pages/page.md.ts that exports a GET returning markdown\n\n# Then advertise with mechanism 3 in <head>:\n#   <link rel=\"alternate\" type=\"text/markdown\" href=\"/page.md\">"
        }
      ]
    }
  ]
}

Usa nuestra API para obtener esto de forma programática (próximamente)