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Mailtrap vs Inbucket: catalog facts
Mailtrap	Inbucket
Freemium Self-serve sign-up with published pricing for paid tiers.	Free Free and open source under the MIT licence.
Web	Windows, Linux, Self-hosted
Captures test emails without reaching real inboxes Previews rendering across 100+ email clients and devices	Accepts mail for any address without setup Web interface plus SMTP and POP3
Hosted service only Much of the product focuses on sending email rather than testing	Meant for testing, not for real mail delivery You run and maintain the server yourself
Web application, Hosted service	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License: MIT
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 October 2, 2026

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