mailcue

The premium Open Source alternative to Mailtrap

🎯 Best for:Developers needing a robust local environment for email workflow testing.

What is mailcue?

An all-in-one email testing server that captures outgoing mail for inspection without actual delivery. It supports SMTP, IMAP, and security validation protocols like DKIM and SpamAssassin in a single container.

Tech Stack
TypeScriptTesting & QA

Why mailcue?

  • Single Docker container setup
  • Integrated SpamAssassin scoring
  • GPG and IMAP support

Limitations

  • Local only by default
  • No long-term mail storage
  • Basic Web UI
3/18/2026
Last Update
0
Forks
4
Issues
MIT
License
Financial Leak Detected

Stop the "SaaS Tax"

Your team could be burning cash. Switching to mailcue instantly boosts your runway.

Competitor Cost
-$1,440
/ year (est. based on Mailtrap)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%

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