# Zimbra review (2026): is it worth it?

> Self-hosted email, calendar and file sharing for organizations

Checked Nov 12, 2026.

Zimbra is an email and collaboration suite by Synacor that covers mail, calendar, contacts, tasks and file sharing. Organizations run it on their own servers, in a cloud, or through a hosting partner. The server's source code is published under GPLv2, but current releases need a paid license.

- **Category:** Email Apps
- **Made by:** Synacor
- **Website:** https://www.zimbra.com
- **Runs on:** Web, Windows, macOS, Linux, iOS, Android
- **Facts last checked:** Nov 12, 2026

## Pricing

Zimbra's current pricing could not be confirmed from its own site.


## Key features

- **Mail, calendar and contacts:** A web client with advanced and attachment search, personal and global address lists, group and resource scheduling, and tasks.
- **Two editions:** Zimbra Daffodil (v10) needs a license, sold as Professional or Standard. Professional has additional features over Standard.
- **Desktop and mobile access:** Zimbra Desktop for Windows, macOS and Linux, a Connector for Outlook on Windows, and ActiveSync on iOS and Android.
- **Standards-based clients:** Works with IMAP, POP, CalDAV and CardDAV, so Thunderbird, Apple Mail and similar clients can connect.
- **Security and admin controls:** Built-in anti-spam and antivirus, two-factor sign-in, LDAP or Active Directory, SAML sign-in and delegated administration.
- **Deployment options:** Install on your own servers, run it in the cloud on AWS or OCI, or use a hosting partner, with multiple domains per install.

## Good for

- Companies and schools that need to keep email on servers they control
- Hosting providers offering white-labeled email to customers
- Teams moving off Microsoft Exchange who want Outlook compatibility

## Worth knowing

- Pricing is not published; Zimbra is licensed, and renewals go through an account manager.
- The FAQ calls the Open Source Edition end of life, with no updates or support.
- Features such as backup and restore, Zimbra Office and large-scale mobile sync need the commercial license.
- Chat and real-time collaboration are protected in transit only, not end-to-end encrypted.

## Keep it, or make your own?

**Keep it.** To replace Zimbra you would be making an email client: sending, receiving, threading and searching years of mail. That is not a weekend's work, with an AI app builder or without one. Zimbra is open source, so there is a third way: take its code and run it yourself.

- You could make: Calendar and tasks: an app builder makes these well.
- You could not: An email client: sending, receiving, threading and searching years of mail.
- You could not: Apps for macOS, Windows, Linux, iOS and Android that stay in step with each other.
- You could not: It plugs into other products, Microsoft Outlook, Thunderbird and Slack among them.
- You could not: What a company asks for before it lets staff use something: single sign-on.
- You could not: Sharing with other people, which means accounts and invitations.

A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it.

## Works with

Microsoft Outlook, Thunderbird, Slack, Zoom, Google Drive, OneDrive, Dropbox

**Tags:** Email client, Calendar, Tasks, Open source, Self-hostable

## Alternatives

- [Roundcube](https://toolgpa.com/tools/roundcube): Free open-source webmail client you host yourself. [Compare](https://toolgpa.com/compare/roundcube-vs-zimbra)
- [mailbox](https://toolgpa.com/tools/mailbox-org): Paid, ad-free email with cloud storage and office tools from Germany. [Compare](https://toolgpa.com/compare/mailbox-org-vs-zimbra)
- [Zoho Mail](https://toolgpa.com/tools/zoho-mail): Ad-free business email hosting with calendar, tasks and notes. [Compare](https://toolgpa.com/compare/zimbra-vs-zoho-mail)
- [Fastmail](https://toolgpa.com/tools/fastmail): Paid, ad-free email with calendar, contacts and custom domains. [Compare](https://toolgpa.com/compare/fastmail-vs-zimbra)
- [Microsoft Outlook](https://toolgpa.com/tools/microsoft-outlook): Microsoft's email and calendar app for desktop, mobile and web. [Compare](https://toolgpa.com/compare/microsoft-outlook-vs-zimbra)

## Sources

The prices, plans, platforms and features above were read from these pages on Nov 12, 2026:

- https://www.zimbra.com/
- https://www.zimbra.com/product/edition-comparison/
- https://www.zimbra.com/faqs/

Page: https://toolgpa.com/tools/zimbra
Listed by ToolGPA (toolgpa.com).