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Sympa vs Dada Mail: catalog facts
Sympa	Dada Mail
Free Free and open source under the GPL-2.0 licence.	Freemium The free version has list and subscriber limits; paid Pro subscriptions add unlimited…
Self-hosted, Command line	Web, Self-hosted
Designed for lists with tens of thousands of subscribers Handles subscription, moderation and archives in one package	Supports newsletters and email discussion lists Tracks opens, clicks, unsubscribes, and bounces
Requires running and configuring your own mail server Setup is aimed at experienced system administrators	The free version is limited to three lists and 100 subscribers per list Requires a server environment capable of running Perl
Self-hosted	Web application, Self-hosted
Open source	Open source
License: GPL-2.0	License: GPL-2.0
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 Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.