looks like a nice application,
How about take it a bit further.
Lets say you loose your "phone" and you have data stored on it that you dont want anyone to see:
A function to wipe the entire phone for such data. ( of course its one selfs own responsibility to have proper backup somewhere else.)

the wipe function should remove any connection to exchange/imap/pop accounts, delete entire phonebook (I have my phonebook synced with exchange, so its a POC to get all the contacts back) remove conversation history etc.
there is a similar function already in the exchange server. I have never tried it so I dont know if it´s doing it properly.