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Tuta Desktop vs Mailfence: catalog facts
Tuta Desktop	Mailfence
Freemium A free account with limited storage and one address. Paid plans add custom domains…	Freemium A free account is available, with paid plans for more features.
Windows, macOS, Linux	Android, iOS, Web
End-to-end encrypts mail bodies, subject lines, calendar and contacts Password-protected messages to recipients who are not Tuta users	OpenPGP encryption and signing in the browser Standard IMAP, POP and SMTP access
No IMAP or SMTP, so third-party mail clients cannot be used A Tuta account is required; it is not a general mail client	Hosted service only Advanced features sit on paid plans
Downloadable app	Downloadable app, Web application, Hosted service
Open source	Closed source
License: GPL-3.0	License not stated
Account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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