[xtho]

ad 1. I'm not sure if this is the case for gmail but when you use a spam filter that is fed by many people there is a chance that you're classification of that mail as spam affects other people. If you use some sort of self-adapting, learning spam filter, you will be affected too because you mark mail as spam that looks like normal mail.

To put it simple: the spam button is for spam = unwanted mass mails, mostly ads. For unwanted mail from specific users, you should create a filter.

My personal take on this though is: People who found out how to subscribe to a mailing list, should also be able to unsubscribe.

[pbhjpbhj]

>To put it simple: the spam button is for spam = unwanted mass mails

Spam is unsolicited. If you've signed up for a newsletter, or similar, then you've requested the messages.