I've always said we needed an unsubscribe link sent with all outgoing emails so that users (even banned) can "opt out" of emails via a one click link...
The only untested method to try would be become member before banning and in mystuff edit profile. elect to not receive "From time to time we send out emails regarding this community. Do you wish to receive these emails?" elect no.
Blue Man Group There is no such thing as stupid questions. Just stupid answers
