How Do I Auto-Delete Viagra Spam? in Software Issues Posted September 11, 2011 DO NOT ACTIVE BOUNCE EMAIL! supposed feature! A loud "AGREED", which goes for similar "features" on other software that use alleged address of the sender stored in the headers. Until someone comes up with a way of reliably assessing the trustworthiness of said headers without potentially causing problems for innocent bystanders, it's safer to assume that it's a clue that's never suitable for firing off bounces, nastygrams and other such responses.