Here is a small script to display a pop-up dialog-box asking the user to verify the account to send through. This script will be triggered each time the user sends an item. For each outbound item a dialog-box with the prompt “Are you sure you want to send the message through the account?” will appear. If the user clicks the Yes button, then the message will send via the selected account. If instead the user clicks “No”, then the code will cancel the send giving the user the opportunity to select a different account for it go out under.

See:http://techniclee.wordpress.com/2011...nding-through/


If you dont want to script a reminder, you could always use the 3rd party "Bells & Whistles for Outlook". It will automate the entire process and always send from the account that the message was originally sent to.

See:http://www.emailaddressmanager.com/o.../reply-to.html