Worse, some of the spammers never acknowledge unsubscribing. One of them is a local coffee roaster so I can yell at the owners face for this. I quited gmail a

Worse, some of the spammers never acknowledge unsubscribing. One of them is a local coffee roaster so I can yell at the owners face for this. I quited gmail a long time ago, I’m not sure if you can run some custom filters on headers like LIST. Some of the worst offender uses the same sender address for both transactional and marketing emails, but sometimes the header can tell some difference.