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Mailtrap vs Mailpit: catalog facts
Mailtrap	Mailpit
Freemium Self-serve sign-up with published pricing for paid tiers.	Free Free to download and run.
Web	Web, Self-hosted, Command line
Captures test emails without reaching real inboxes Previews rendering across 100+ email clients and devices	Single binary or Docker image with no dependencies HTML compatibility, link and spam checks built in
Hosted service only Much of the product focuses on sending email rather than testing	For testing only, not a real mail client Spam scoring relies on a SpamAssassin setup
Web application, Hosted service	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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