6. The machine-readable medium of claim 5 , wherein retrieving the context of the user of the primary computing device comprises determining that a cellular connection of the primary computing device is not available.
6. The machine-readable medium of claim 5 , wherein retrieving the context of the user of the primary computing device comprises determining that a cellular connection of the primary computing device is not available. 7. The machine-readable medium of claim 6 , wherein the identified message mode indicates that communication messages transmitted to the secondary computing device are restricted to contacts that have a chat address.