Update mailbox properties when unpairing mailbox
When we unpair our own mailbox, update the mailbox properties that are synced to our contacts.
Depends on #2181 (closed), #2173 (closed), #2175 (closed).
When we unpair our own mailbox, update the mailbox properties that are synced to our contacts.
Depends on #2181 (closed), #2173 (closed), #2175 (closed).