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Yahoo Mail vs Proton Mail: catalog facts
Yahoo Mail	Proton Mail
Free Free email service from Yahoo.	Freemium Free accounts work in the mobile and web apps; the desktop apps are offered as a free…
Android, iOS, Web	Windows, macOS, Linux, Android, iOS, Web
Free email account Available on the web and on phones	End-to-end encrypted email by default Apps for iOS, Android, macOS, Windows, Linux and the web
Closed service run by a large advertising company Hosted only, no self-hosting option	Only works with a Proton account Desktop apps need a paid plan after the trial
Web application, Hosted service	Downloadable app, Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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