I have a 8700G/BIS and have my Gmail accounts forwarded to my handheld. All of a sudden Gmail started stripping out attachments (the "paperclip" doesn't show). I checked Gmail and made sure the attachments were there and they indeed were. I also resent my service books, pulled the battery, and deleted and re-added my Gmail accounts to my BIS.
Last night I wiped my device via JL Loader and reloaded my OS. I tried to send a few .jpg's to my device and they ended up being stripped out. I've already tried deleting and re adding the email accounts on my BIS.