OPTION #3
Just ignore the few random emails that your users send to your forum contact email address. If they question why their emails are not being converted to forum posts, remind that your forum would have no way to know what email should be attached to what post, and that posting via mail could be a security nightmare for when fraudulent emails arrive and get added to random posts in member only, private or secure, and staff forums.
I think this was already brought up and answered a little while ago.
I'll search for the post and edit my reply here when I find it.EDIT: I know it was previously discussed, and the same answers were given. I've already spent several minutes looking for it, and am done trying to locate it. Its midnight here, and this has already been a long day for me. Feel free to search the forums for further discussion if you need it
Others will almost definitely post their ideas as well
