Name: autocreate_subscribe_sharedfolders
Type: STRING
Default-Value: NULL
Last-Modified: 2.5.0

A list of shared folders (bulletin boards), separated by "|", that the
users get automatically subscribed to, after their INBOX is created.  The
shared folder must have been created and the user must have the required
permissions to get subscribed to it.  Otherwise, subscribing to the shared
folder fails.
