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GMX Mail vs Yahoo Mail: catalog facts
GMX Mail	Yahoo Mail
Free Free, supported by advertising and sponsored content.	Free Free email service from Yahoo.
Web	Android, iOS, Web
Up to 10 addresses on one free account Mail collector for other email accounts	Free email account Available on the web and on phones
Web portal shows sponsored news and ads Hosted service, so you rely on the provider for your mail	Closed service run by a large advertising company Hosted only, no self-hosting option
Web application, Hosted service	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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