I've tried sooo many things I'm pretty certain I've tried that, but I'll try it again this weekend. I'm gonna release 2.4 as soon as it goes through a few testers and then I'll work on vbmail for 2.5
If I recall right I believe the headers var just appends it to vbulletins list of headers but I could be wrong. Which I need to create the from header, reply to and message id my own way
Anyway, I'll dig into it again this weekend and try the snippet you put above