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.
Anecdotally, most people aren't going to go through the couple or three clicks to unsubscribe. This is what spammers rely on.