I'm using Gmail on my iPhone 4S and I have an alternate email address set up as a Send As address in Gmail. I've followed this tutorial (http://support.google.com/mobile/bin/answer.py?hl=en&answer=138740) and I have everything setup, but I can't seem to select the alternate Send As address from the iOS mail app. I've done some Googling and I can't seem to find a solution that's working and I'm wondering if anyone has this setup and working on their iDevice.