SHSelfHostIndex

DKIMpy Milter vs Mailpit

A side-by-side comparison of two self-hosted mail servers options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
DK DKIMpy Milter DKIM signing and verification milter for mail servers VS MA Mailpit Email and SMTP testing tool with web UI
FeatureDKIMpy MilterMailpit
CategoryMail ServersMail Servers
LicenseGPL-2.0MIT
LanguagePythonGo
Setup difficultyMediumEasy
Min. RAM64 MB64 MB
Deploymentbare-metal, sourcedocker, binary
GitHub stars★ 20★ 10,067
First released20182022
ReplacesHosted email authenticationMailtrap, MailHog

Why pick each one

Choose DKIMpy Milter if…

  • Released under the GPL-2.0 license
  • Written in Python
  • Tiny footprint — runs in 64 MB RAM
DKIMpy Milter details

Choose Mailpit if…

  • Very fast and small
  • Great developer UX
Mailpit details

Frequently asked questions

Is DKIMpy Milter or Mailpit better?

Mailpit is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider DKIMpy Milter if its specific feature set fits your needs better.

Are DKIMpy Milter and Mailpit free and open-source?

Yes. DKIMpy Milter is licensed under GPL-2.0 and Mailpit under MIT. Both can be self-hosted at no software cost.

Can I run DKIMpy Milter and Mailpit with Docker?

DKIMpy Milter: check the project docs for container support. Mailpit: yes.

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