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mailcow vs Zimbra Collaboration

mailcow

7.4#1 in mail server softwareFrom €8.90 a month

Free planAndroidiOSWebLinux

6.4#14 in mail server software

AndroidiOSWebLinux

Fact	mailcow	Zimbra Collaboration
Administration	The mailcow web interface lets administrators create domains and email addresses and manage most settings.	Multi-tenancy and delegated administration let administrators manage distinct organizations and assign granular admin roles.
Audience	Servercow describes shared mailcow as suited to private users or small businesses with low email volume.	Zimbra describes its customer base as including regulated institutions in finance, government, and education, as well as enterprises and service providers.
Integrations	The documentation lists client setup guides for Android, Apple macOS/iOS, eM Client, KDE Kontact, Outlook, and Thunderbird.	Zimbra's third-party apps page names Slack, Zoom, Dropbox, Webex, Jitsi, and Microsoft Teams.
Product	mailcow: dockerized is an open-source groupware and email suite based on Docker.	Zimbra is an enterprise email and collaboration suite with email, calendar, contacts, tasks, and file sharing.
Security	Two-factor authentication options include YubiKey OTP, WebAuthn, and TOTP.	Listed security capabilities include two-factor authentication, S/MIME email signing and encryption, SAML single sign-on, and mobile device allow/block/quarantine controls.
Support	Commercial support is available through Servercow, while community support is voluntary, best-effort, and not guaranteed.	Standard support is business-hours only; Premier adds 24×7 support for Severity-1 issues.

You want what its maker publishes above — check its page for the details.

You want what its maker publishes above — check its page for the details.