Zimbra alternatives · Email
Free alternatives to Zimbra
Zimbra has no free plan. 82 of the 125 other email apps in this directory are free or have a free plan.
Zimbra's current pricing could not be confirmed from its own site. 30 of them have no paid plan at all; the rest pair a free plan with paid ones.
82 tools · Listings checked up to Nov 13, 2026 · Where the facts come from
The 12 closest to Zimbra
- Free
Roundcube
Free open-source webmail client you host yourself
What is free: Everything. There is no paid plan.
- Roundcube has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Zimbra also covers tasks and calendar.
- Free plan · from $1/mo
Zoho Mail
Ad-free business email hosting with calendar, tasks and notes
What is free: Forever Free Plan: email hosting for one domain and up to 5 users, with 5 GB of mail storage each. IMAP, POP and ActiveSync are not included, and it is available only in select data centers.
- Zoho Mail has a free plan. Zimbra does not.
- Zimbra is open source and self-hostable, according to its own site.
- Free plan · from $1.99/mo
Microsoft Outlook
Microsoft's email and calendar app for desktop, mobile and web
What is free: Free Outlook for 1 person: email and calendar on the web, desktop and mobile apps, 15 GB of mailbox storage, 5 GB of cloud storage and core spam filtering. The free inbox shows ads.
- Microsoft Outlook has a free plan. Zimbra does not.
- Only Zimbra lists a Linux app.
- Zimbra is open source and self-hostable, according to its own site.
- Microsoft Outlook also covers inbox filtering.
- Free plan
Axigen
Mail server with calendars and webmail for Windows and Linux
What is free: Free Mail Server: 10 domains, 10 users, 10 groups, aliases and public folders, for home, small business and test use.
- Axigen has a free plan. Zimbra does not.
- Only Zimbra lists macOS, iOS and Android apps.
- Zimbra is open source, according to its own site.
- Zimbra also covers tasks.
- Free
Horde
Free open-source webmail, calendar, contacts and tasks suite
What is free: Everything. There is no paid plan.
- Horde has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Horde also covers notes.
- Free plan · from $499/yr
iRedMail
Open-source mail server installer for Linux and BSD
What is free: iRedMail itself is free and open source, with a free basic web admin panel.
- iRedMail has a free plan. Zimbra does not.
- Only Zimbra lists a web app.
- Only Zimbra lists Windows, macOS, iOS and Android apps.
- Zimbra also covers tasks.
- Free
Thunderbird
Free, open-source email app for Windows, macOS, Linux and Android
What is free: Everything. There is no paid plan.
- Thunderbird has a free plan. Zimbra does not.
- Only Zimbra lists a web app.
- Only Zimbra lists an iOS app.
- Zimbra is self-hostable, according to its own site.
- Free plan
Wino Mail
Free, open source mail and calendar app for Windows
What is free: Wino Mail is always free with no Wino Account needed: Mail, Calendar, Contacts and To Do, all core customization options and up to 3 email accounts.
- Wino Mail has a free plan. Zimbra does not.
- Only Zimbra lists a web app.
- Only Zimbra lists macOS, Linux, iOS and Android apps.
- Zimbra is self-hostable, according to its own site.
- Free
SOGo
Open-source groupware with webmail, calendars and contacts
What is free: Everything. There is no paid plan.
- SOGo has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Zimbra also covers tasks.
- Free
mailcow
Dockerized open-source mail server with a web admin UI
What is free: Everything. There is no paid plan.
- mailcow has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Zimbra also covers tasks.
- Free
Mail-in-a-Box
Free script that turns a cloud server into your own mail server
What is free: Everything. There is no paid plan.
- Mail-in-a-Box has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Zimbra also covers tasks.
- Free plan · from $2.40/yr
Stalwart Mail Server
Open-source mail and collaboration server written in Rust
What is free: Community edition: the full mail server under AGPL-3.0, free to run on your own infrastructure.
- Stalwart Mail Server has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Stalwart Mail Server also covers file sharing and dMARC.
- Zimbra also covers tasks.
70 more that are free or have a free plan
- Afterlogic WebMail
- Modoboa
- Proton Mail
- Tuta Mail
- Spike
- eM Client
- Zero Mail
- Evolution
- Betterbird
- Mailu
- Twobird
- SnappyMail
- Cypht
- SmarterMail
- Spark Mail
- Yahoo Mail
- Canary Mail
- BlueMail
- Mailspring
- Mailfence
- Newton Mail
- FairEmail
- Mailo
- SimpleLogin
- addy.io
- GMX Mail
- Claws Mail
- Mail.com
- Yandex Mail
- WEB.DE
- K-9 Mail
- NeoMutt
- aerc
- Sylpheed
- Mutt
- CTemplar
- Foxmail
- docker-mailserver
- hMailServer
- Shortwave
- Gmail
- Apple Mail
- Mailbird
- Airmail
- Edison Mail
- Mailbutler
- Extra
- Marco
- FlowCrypt
- AOL Mail
- Aqua Mail
- Riseup
- Guerrilla Mail
- AtomicMail
- MailMaestro
- Temp Mail
- Help Scout
- Fyxer
- Clean Email
- Unroll.Me
- Boomerang
- Mailmeteor
- Cleanfox
- ImprovMX
- Firefox Relay
- Right Inbox
- Mailinator
- Maildrop
- Mailbrew
- Compose AI
Common questions
Is there a free alternative to Zimbra?
Yes. Roundcube, Zoho Mail, Microsoft Outlook, Axigen, Horde, iRedMail, Thunderbird, Wino Mail and 74 more are free or have a free plan.
Does Zimbra have a free plan?
Zimbra has no free plan. Zimbra's current pricing could not be confirmed from its own site.
When was this checked?
Each listing shows its own date. On this page they run from Oct 4, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Zimbra: the alternatives its listing names first, then the tools that share the most features with it.