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Seznam Email vs iCloud Mail: catalog facts
Seznam Email	iCloud Mail
Free Free email accounts.	Freemium Free with an Apple Account, with more storage on paid iCloud+ plans.
Web	macOS, iOS, Web
Free addresses on several Czech domains One account covers other Seznam services	Built into Apple devices Web client for use on any computer
Interface and service aimed at Czech speakers Requires a mobile phone number to register	Requires an Apple Account Best experience is on Apple hardware
Web application, Hosted service	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 October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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