All I'm saying is if you're going to push out an email campaign, figure out who needs to be emailed. Don't send out a blind "please donate!" to people who are already donating, and don't send out "X is now on sale!" to folks who already bought X.
Just because you don't see the people you're bothering doesn't mean you're not a bad person for causing mass-bother.
You're doing a bad, and you should feel bad, and you should stop doing it.