Zimbra

Secure email and collaboration platform with complete data sovereignty

About Zimbra

Zimbra is an email and collaboration platform combining mail, calendar, contacts, tasks, file sharing and chat, deployable on-premises, in private cloud or regional data centers for full data control. Its core server is open source, while commercial licenses add high-availability clustering, encryption and large-scale sync, with Standard and Professional plans and multiple support levels. It serves enterprises, governments and institutions needing an open alternative to proprietary suites.

Zimbra website preview

Live preview of zimbra.com via the WordPress mShots service — it can take a few seconds to generate on a first visit.

Zimbra: strengths & things to check

Strengths

Free tier available — you can start without paying (freemium model).
Covers email, collaboration, groupware, self hosted, enterprise — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

The full feature set sits behind a paid plan — check which limits the free tier carries on the official site before committing.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 565 tools in the Communication & Collaboration category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

Zimbra pricing

Pricing model	Freemium — a free tier lets you start, and paid plans are available if you need more.
Free access	Yes — free tier, paid upgrades available
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	zimbra.com

Zimbra key facts

Category: Communication & Collaboration
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: email, collaboration, groupware, self hosted, enterprise
Official site: zimbra.com

Zimbra FAQ

How much does Zimbra cost?

Freemium — a free tier lets you start, and paid plans are available if you need more. Current plans and prices are listed on the official site (zimbra.com).

What is Zimbra used for?

Secure email and collaboration platform with complete data sovereignty Its focus areas in the Communication & Collaboration category: email, collaboration, groupware, self hosted, enterprise.

Where can I try Zimbra?

On its official site, zimbra.com — the Visit Official Site button above goes straight there.

Zimbra vs alternatives

	Zimbra	BlueMind	Apache OpenMeetings	Attentive
Pricing	Freemium — a free tier lets you start, and paid plans are available if you need more.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Paid — this directory does not list a free tier for it.
Focus areas	email, collaboration, groupware, self hosted, enterprise	email, calendar, groupware, enterprise	video conferencing, whiteboard, groupware, self hosted, open source	sms, email, retail, enterprise
Official site	zimbra.com	bluemind.net	openmeetings.apache.org	attentive.com
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Communication & Collaboration category

Chat, video meetings, and messaging apps that keep teams connected. The Communication & Collaboration category on Tools Hub currently lists 565 tools. Alongside Zimbra, it includes OTOBO, Zammad, JotMe, Flask.

FreemiumCommunication & Collaborationemailcollaborationgroupwareself-hostedenterprise

Alternatives to Zimbra

Tools in the same Communication & Collaboration category that share focus areas with Zimbra — worth comparing before you commit:

Communication & Collaboration

BlueMind

Collaborative messaging and calendar platform

Freemiumemailcalendargroupwareenterprise

Communication & Collaboration

Apache OpenMeetings

Open-source video conferencing, whiteboard and groupware from Apache

Freevideo-conferencingwhiteboardgroupwareself-hosted

Communication & Collaboration

Attentive

SMS and email marketing for consumer brands

Paidsmsemailretailenterprise

Communication & Collaboration

docker-mailserver

Production mail server packaged with Docker

Freemail-serverdockeremailself-hosted

Communication & Collaboration

Dovecot

The secure, high performance email server

Freemiumemailimapmail-serverself-hosted

Communication & Collaboration

EmailRelay

Lightweight SMTP store-and-forward mail server with POP access

Freeemailsmtpmail-serverself-hosted

More in Communication & Collaboration

Comparing tools in the Communication & Collaboration category? These related listings are worth a look: OTOBO — The open source service management platform; Zammad — Open-source web-based user support and ticketing solution; JotMe — Live AI translation for meetings and events in 200+ languages.