As far as I'm concerned, a single unsolicited message from anyone with no personal connection to myself constitutes spam. Obviously opt-in lists are a different

As far as I'm concerned, a single unsolicited message from anyone with no personal connection to myself constitutes spam. Obviously opt-in lists are a different story. Anecdotally, most people aren't going to go through the couple or three clicks to unsubscribe. This is what spammers rely on.