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Mailpit vs Inbucket: catalog facts
Mailpit	Inbucket
Free Free to download and run.	Free Free and open source under the MIT licence.
Web, Self-hosted, Command line	Windows, Linux, Self-hosted
Single binary or Docker image with no dependencies HTML compatibility, link and spam checks built in	Accepts mail for any address without setup Web interface plus SMTP and POP3
For testing only, not a real mail client Spam scoring relies on a SpamAssassin setup	Meant for testing, not for real mail delivery You run and maintain the server yourself
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.