Citadel
6.4#4 in mailing list management softwareFree planFree planWebAPILinuxmacOS
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| Fact | Citadel | listmonk |
|---|---|---|
| Architecture | Citadel uses a rooms-based architecture for organizing collaboration features. | The application uses a Go backend, a Vue/Buefy frontend and PostgreSQL as its only runtime database dependency. |
| Authentication | Citadel can authenticate users through its own database, host-system accounts, or LDAP including Microsoft Active Directory schemas. | The product includes OIDC single sign-on, granular roles and permissions, and API tokens. |
You want what its maker publishes above — check its page for the details.
It suits organizations that want to host and operate their own newsletter or one-way mailing list system. It is also relevant for teams needing API access, segmented lists, or transactional messaging through supported channels.