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Seznam Email vs Yahoo Mail: catalog facts
Seznam Email	Yahoo Mail
Free Free email accounts.	Free Free email service from Yahoo.
Web	Android, iOS, Web
Free addresses on several Czech domains One account covers other Seznam services	Free email account Available on the web and on phones
Interface and service aimed at Czech speakers Requires a mobile phone number to register	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
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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