Saphira Linux MailDragon
An Open Source, shell-based mail server for Saphira Linux. No dashboard, no SaaS, no per-mailbox billing — a complete mail system you own and control, free forever.
What you get
On top of mail, MailDragon can deliver a full personal information suite through Roundcube webmail: Mail, Contacts over CardDAV, Calendar over CalDAV, and Tasks over CalDAV. Baïkal is the server-side source of truth for contacts, calendars and tasks; Roundcube is the web interface that reads and writes them.
- Mail — IMAP/POP3 as standard.
- Contacts — CardDAV, backed by Baïkal.
- Calendar — CalDAV, via the Kolab calendar plugin.
- Tasks — CalDAV VTODO objects, via the Kolab tasklist plugin.
Built from source on Saphira
The calendar and contacts stack is compiled from source on Saphira: the Kolab calendar and tasklist plugins, a locally patched libkolab, and the CardDAV plugin. Node.js is used only as a build tool for CSS and must never become a runtime service. The result is a self-contained web suite that does not depend on external SaaS for your calendar.
Packaging and editions
Calendar, contacts and tasks are provided as an add-on package. They are not bundled in the FREE edition by default, but the package is available to every edition and nothing restricts installing it. FREE stays on SQLite to spare you database administration; the SUPPORTED edition uses MariaDB. Crucially, nothing a FREE installation does is blocked from being upgraded by you to the MariaDB-backed edition later.
Operations
As with every MailDragon change, configuration and the plugin database are backed up before any upgrade or plugin change, and dependency security is taken seriously rather than disabled to make an install easier.