That's basically the emails you get for offers and updates via your forum account, you can untick these two options in your forum account profile to avoid future emails. It's the same available offers that everyone has in "M" key in-game as I assume but it keeps you notified of news.

I never heard of that before, may you explain the reasons of why it got disabled?

I stopped by two new citizens to help them out from dying on the streets, and from nowhere this guy came and killed us both with no RP involved or anything. You may watch the video.