In the new 1502 release there will be a new way to send mail, that will enable you to change the sender address as you want!
The emails sent in this way will not be available in the activity->email workcenter, but you can always trace them using a custom development.
Step 1. Create the reuse function
You can always skip this step, even if this is not recommended.
Step 2. (ab)use the reuse function
The highlighted yellow part is mandatory.
The highlighted green part is our reuse function.
Happy mailing 🙂