If I want to forward a text message to an email recipient, only phone contacts will populate the To: text box. I have email addresses in my contacts yet they won't populate the drop down boxes, only phone contacts. If I manually type in the email address it will send it no problem, but I have to retype the whole address each time.
Seems odd, I guess, but there are even stranger idiosyncrasies on our beloved Droids. (Like no speed dial... that's ridiculous)