SHSelfHostIndex

Postfix vs Kopano Groupware Core

A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
PO Postfix Fast, secure and reliable mail transfer agent VS KO Kopano Groupware Core Open-source collaboration platform with Outlook support
FeaturePostfixKopano Groupware Core
CategoryMail ServersGroupware
LicenseIPL-1.0AGPL-3.0
LanguageCC++
Setup difficultyHardHard
Min. RAM128 MB2,048 MB
Deploymentdocker, bare-metal, sourcedocker, bare-metal
GitHub stars★ 563★ 60
First released19982016
ReplacesMicrosoft ExchangeMicrosoft Exchange

Why pick each one

Choose Postfix if…

  • Battle-tested and stable
  • Extensive documentation
Postfix details

Choose Kopano Groupware Core if…

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in C++
Kopano Groupware Core details

Frequently asked questions

Is Postfix or Kopano Groupware Core better?

Neither is universally better. Postfix has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.

Are Postfix and Kopano Groupware Core free and open-source?

Yes. Postfix is licensed under IPL-1.0 and Kopano Groupware Core under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Postfix and Kopano Groupware Core with Docker?

Postfix: yes. Kopano Groupware Core: yes.

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