Mailpit Review 2026
Email & SMTP testing tool with API for developers
What is Mailpit?
A small, fast, zero-dependency email and SMTP testing tool for developers that acts as an SMTP server with a modern web UI to view and test captured emails. Includes an API for automated integration testing.
Best for
Mixed
Use cases
- Email testing
- Integration testing
- Email development
Key features
SMTP server
Web UI to view captured emails
REST API for integration testing
HTML compatibility checker
Spam testing with SpamAssassin
Pricing
Model
free
Price range
Free open-source tool
Free tier
Yes
Integrations
Mailpit integrates with 3 tools including:
DockerSpamAssassinPOP3
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