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Mailtrap vs MailHog: catalog facts
Mailtrap	MailHog
Freemium Self-serve sign-up with published pricing for paid tiers.	Free Free and open source under the MIT licence.
Web	Windows, macOS, Linux, Self-hosted, Command line
Captures test emails without reaching real inboxes Previews rendering across 100+ email clients and devices	Single Go binary that runs without installation Web UI and API for inspecting captured mail
Hosted service only Much of the product focuses on sending email rather than testing	Little development activity; last commit in early 2024 Intended for testing, not for delivering production mail
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.