Compare software

Schleuder vs mlmmj: catalog facts
Schleuder	mlmmj
Best for: Groups that need an encrypted shared email address	Best for: Administrators wanting lightweight mailing lists on a small server
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the MIT licence.
Self-hosted	Self-hosted, Command line
OpenPGP encryption for group email Can send and receive mail to and from non-subscribers All 3 strengths for Schleuder OpenPGP encryption for group email Can send and receive mail to and from non-subscribers Separate documentation for subscribers, list admins and server admins	Very low resource use with no daemons Works with Postfix, Exim, qmail and sendmail All 3 strengths for mlmmj Very low resource use with no daemons Works with Postfix, Exim, qmail and sendmail Automated bounce handling, moderation and digests
Members need to manage OpenPGP keys Requires running your own mail server	Deliberately minimal feature set Configured from the command line and files rather than a full web admin
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Schleuder schleuder.org Catalog checked October 2, 2026	Official website Full listing and sources Sources for mlmmj mlmmj.org Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.