It's in the Supported Modifications forum; I didn't include "in" the product because of the complexity in setting it up for alot of our users (server configuration side, that is). The code to support the functionality is in PhotoPost itself; but the code to add this functionality is in that forum.
In fact, I used it last week to upload images during the birth of our son:
http://www.viperalley.com/gallery/sh.../3018/ppuser/3
I need to make some changes because Sprint changed its email format that I had to fix, though.