IMAP message content not there...

hi. i'm trying to build a webmail app that binds in different IMAP (and POP) accounts into one view. however, for messages sent from this webmail system, using PHP's mail() function, i can't seem to retrieve the message content using imap_fetchstructure(), while this does work for emails sent through normal means. the message content *does* appear in gmail, the address i'm sending to. any idea what i could be doing wrong here? full sources are listed at https://github.com/nicerapp/nicerapp/tree/master/nicerapp/businessLogic/webmail/