Licensing Users

Spanning Backup protects the data of each licensed user. Spanning users can be licensed with a standard license or an archived license. If a standard license is applied, Spanning runs daily backups of the user's Mail, Calendars, Contacts, and OneDrive data. If an archived license is applied, any existing Spanning Backup data is retained but no new backups are run.

NOTE  Spanning also protects shared mailboxes— for free. You can protect one shared mailbox for each standard user license purchased. You can archive one shared mailbox for each archived license purchased. For details, see Protecting Shared Mailboxes.