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

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