MyBB Community Forums

Is it prossible to add bots. I'v seen it already on other MyBB forums.

I mean especialy bots that can send a private message when a user make a post in a forum..

I don't think there's a way to make a person get a PM whenever they post as nobody would want that but there's one to send a PM when they register: http://mods.mybboard.net/view/pm-on-registration

In the settings you can specify the user that the message if from, so you could create a user, and have it so the message is from that user.