I met Roger Guess (@RogerGuess) on Twitter this morning when I responded to one of his tweets. Roger’s tweet asked if there was some way in Outlook to have a visual reminder of the account an item is being sent through. Roger explained that he needs this to avoid sending message through the wrong account.
Outlook does provide a visual cue in the form of a warning that appears directly above the Send button for any message that’s not being sent through the default e-mail account. The warning says “This message will be sent via .” Since this warning does not appear for messages being sent via the default account it does act as a warning. If the warning does not appear, then you’re sending through the default account. If it does appear, then you know you’re sending through one of your other accounts and the warning tells you which one you’re using.