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Zimbra vs Zoho Mail: catalog facts
Zimbra	Zoho Mail
Paid Sold in several editions under Zimbra's license terms; see the edition comparison.	Paid Paid business plans billed per seat, which can be mixed within a team.
Web, Self-hosted	Web
Mail, calendar and contacts in one web client Can be run on your own servers	No advertising Choice of data centre region
Aimed at organisations rather than individuals Running a mail server takes administration effort	Proprietary hosted service Aimed at businesses rather than individuals
Self-hosted, Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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