It is either a bug or I miss something here. You may try it out, maybe you'll find a way to solve the mystery... I open my E-Mail that was defined for G-Mail (not exchange). Wrote a letter with some mistake in the destination address and push the send the letter was not sent, and it was moved automatically into the OUTBOX. So now I want to correct the address. I click on the letter It opens it properly. Now for the life of me I couldn't find a simple strait forward way to update or change the address.