IS there a way to ad an automatic signature to emails when users email each other. I want just 1 (The same) signature on every email
there is no way by default, you would need a mod to do that.
So there no I can modify any of the template or source files to do this?
i dont know off hand how, you could post in coding discussion if you are willing to learn how and do it yourself, otherwise post in Mod Requests (http://www.simplemachines.org/community/index.php?board=79.0) and request someone to do it for you.