What is Mailtrap used for?

Mailtrap is an email delivery platform combining a testing sandbox, a sending API and SMTP service, and email marketing tools for development and product teams. It is a good fit for testing app emails without sending to real users and sending reliable transactional email in production.

Yes. Mailtrap has a free plan, and paid plans start at $15 per month.

Is Mailtrap open source?

No. Mailtrap is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to Mailtrap include Plunk and Postal.

What are some alternatives to Mailtrap?

Mailtrap competes with Postmark, Amazon SES and Mailjet. For open-source options, see Enlisted's ranked list of open-source Mailtrap alternatives.

Mailtrap: features, pricing and alternatives

About Mailtrap

Mailtrap began as a sandbox that catches emails sent from staging and development environments so developers can inspect them without delivering anything to real inboxes. It has grown into a broader email delivery platform for developer and product teams.

Current products include an email API and SMTP service for sending transactional email, the email sandbox for debugging in dev and QA environments, email marketing for scheduling campaigns, and inbound email infrastructure for AI agents and workflows. A device previews feature checks how messages look across many email clients. Mailtrap is a hosted service with 24/7 support advertised.

Key features

Email sandbox for staging and QA
Email API and SMTP for sending
Device previews across email clients
Email marketing campaigns
Inbound email for AI agents

Good fit for

→Testing app emails without sending to real users
→Sending reliable transactional email in production

Tags: email-testing; email-api; smtp; transactional-email; developer-tools; sandbox; email-marketing

Mailtrap: questions and answers

What is Mailtrap used for?: Mailtrap is an email delivery platform combining a testing sandbox, a sending API and SMTP service, and email marketing tools for development and product teams. It is a good fit for testing app emails without sending to real users and sending reliable transactional email in production.
Is Mailtrap free?: Yes. Mailtrap has a free plan, and paid plans start at $15 per month.
Is Mailtrap open source?: No. Mailtrap is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to Mailtrap include Plunk and Postal.
What are some alternatives to Mailtrap?: Mailtrap competes with Postmark, Amazon SES and Mailjet. For open-source options, see Enlisted's ranked list of open-source Mailtrap alternatives.