Is there a way to do this from the API with a list of emails?
I have some advertisers that occasionally send a list of problem emails they recommend be scrubbed to avoid complaints. Is there a way to import the list and have them all unsubscribed from all lists?
While I could add them to the blacklist, I've read doing so could cause a slowdown of mail over time. For this reason, it might be better to unsubscribe them. But please comment on which is the best way to do this. Sure I can locate them in the list as described, but when there are a few dozen it gets tedious.