If I receive an email on one account, is there a way to reply from a different account that is setup on the BB? "Send using" lets me select it, but the only option is the address which the email has come from. It's a bit weird the "send using" is there as a changable option, but there's no other options to change it to!
There is actually a logical reason for this, I suppose in RIM's mind it is maybe security related, in that it does control how replies are made, and can't be messed with, as you will also see that on a reply message, the original message cannot be edited at all, other than removed totally.