Here is something from the Sassie Help documentation (the emails might still bounce back to the sender, but it sounds like they won't remove you from the mailing list - not sure if that's going to be much help):
Q. I keep getting the warning email over and over again - how do I PERMANENTLY keep my email coming?
A. you can register for FREE on our "Protected List" on JobSlinger. Once you do so, we will try to keep sending email to your address regardless of how many bounces we get.
More info is here: [
shopper-help.sassieshop.com]
I hope you find something there that helps you.