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MailCatcher vs Mailpit

The same facts for both, read from GitHub every night, and the relation a person reviewed.

MailCatcherMailpit
LanguageRubyGo
LicenceMITMIT
Stars6.8k11k
Latestv0.10.0v1.31.4
Last push2026-09-162026-10-06
Release cadencetoo few releasesabout 11 days between releases
Active contributors3 commit authors on the default branch in the last 90 days4 commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace Mailtrap. Alternatives to Mailtrap →

    PartialMailCatcherA local SMTP server and web inbox for development; no API checks or sending service.

    PartialMailpitThe email sandbox only, with SMTP capture, a web inbox, HTML checks and an API; no sending service.