@mjones sorry didn't see the second oart of ur post. Wasn't tryint to be rude though either. But yea its rooted. I don't remember deleting it but its possible
Someone correct me if I'm wrong but I think this is the correct way to do it.
su
mount -o remount,rw -t yaffs2 /dev/block/mtdblock4 /system
cd /system/app
mv Email.bak Email.apk
mount -o ro,remount -t yaffs2 /dev/block/mtdblock4 /system
sync
reboot your phone