I currently have a mail handler turned on to process incoming emails as new issues or comments. I need to capture the sender email address in a custom field ("Sender Email Address") if the sender is a non-user. ((I've read that others have done this, just not how they've done it.))
I am not an advanced scripter, but have some experience with Script Runner and would like to know how to write a listener script (or mail handler) to populate this custom field with the sender's email address upon receipt.