SHSelfHostIndex

NeoMutt vs smtp4dev

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?
NE NeoMutt Feature-rich terminal email client VS SM smtp4dev Fake SMTP server for development email testing
FeatureNeoMuttsmtp4dev
CategoryMail ServersMail Servers
LicenseGPL-2.0GPL-3.0
LanguageCC#
Setup difficultyMediumEasy
Min. RAM64 MB128 MB
Deploymentbinary, sourcedocker, binary
GitHub stars★ 3,799★ 3,941
First released20162015
ReplacesMicrosoft OutlookMailtrap

Why pick each one

Choose NeoMutt if…

  • Released under the GPL-2.0 license
  • Active community (3.8k GitHub stars)
  • Written in C
  • Tiny footprint — runs in 64 MB RAM
NeoMutt details

Choose smtp4dev if…

  • Easy local testing
  • Cross-platform
smtp4dev details

Frequently asked questions

Is NeoMutt or smtp4dev better?

smtp4dev is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider NeoMutt if its specific feature set fits your needs better.

Are NeoMutt and smtp4dev free and open-source?

Yes. NeoMutt is licensed under GPL-2.0 and smtp4dev under GPL-3.0. Both can be self-hosted at no software cost.

Can I run NeoMutt and smtp4dev with Docker?

NeoMutt: check the project docs for container support. smtp4dev: yes.

Related comparisons