Sympa is a mailing-list manager. As such, its goal is to automate all mailing-list operation such as subscription with automatic authentication, unsubscription, but also archiving message, sending digests on a regular basis, expiration of addresses, and so on.

Sympa is developped by the CRU (French Universities Network Committee) ; it is distributed under the terms of the GNU General Public License Version 2.

Sympa is designed to be highly customizable, easy to manage and efficient. Sympa is therefore a nice solution for managing small intranet mailing lists as well as very large ISP mailing list services.