Mailman 3 SaaS
Mailman 3 vs Sympa
Sympa and GNU Mailman are both open-source mailing list managers. You can have a working list the same day either way. The difference is not how you spend the first afternoon. It is who is still there for upgrades, deliverability, and the Friday evening CVE.
Sympa is something you install and keep. Mailman 3 on Mailman3.com is the same class of software, run for you.
| Sympa (you host) |
Mailman 3 (Mailman3.com) |
|
|---|---|---|
| License | Open source | Open source |
| Installation | apt install sympa | We install it |
| Who runs the server | You | Us |
| Upgrades | You | Us |
| Vulnerability fixes | You | Us |
| Backups | You | Ready for download |
| Member sync via | LDAP, SQL, file | API, Mailman shell, LDAP, file |
| API | SOAP, you configure | Included: REST with RBAC |
| Email health (DKIM, SPF, ARC) | You | Included |
| DMARC reports | – | Included |
| Blacklist delisting, FBLs | You | Us |
| AI Moderator | – | + |
| Newsletter | – | + |
| MCP servers | – | + |
| If the listmaster leaves | 🤔 | Keeps running |
The "You" column is the listmaster's job: the server, the upgrades, the backups, the day Yahoo or a blacklist becomes a problem. On Mailman3.com those rows are Us or Included, and the lists keep running. AI Moderator, Newsletter, and MCP come with the service. They are not extra machines to babysit.
The plans comparison has Shared, Dedicated, Reseller, and Enterprise side by side: what each plan includes, where the server can run, and what it costs.
What is Mailman?
GNU Mailman is mailing list management software.
The Mailman project was started a long time ago, before the millennium.
Since then it has grown into one of the most capable tools for handling mailing lists.
A huge number of companies, including Fortune 500 members, have relied on Mailman for years.
The latest version, Mailman 3, brings an even better user experience and greater communication power.