* `/var/roundcube/db`: storage location of the SQLite database
Only needed if using `ROUNDCUBEMAIL_DB_TYPE=sqlite` to persist the Roundcube database.
+* `/var/roundcube/enigma`: storage location of the enigma plugin
+ If enabled, the "enigma" plugin stores OpenPGP keys here.
+
* `/tmp/roundcube-temp`: Roundcube's temp folder
Temp files like uploaded attachments or thumbnail images are stored here.
Share this directory via a volume when running multiple replicas of the roundcube container.