Google Push Mail and default sender address
Google just enabled push email today for the iphone and it's pretty cool. Unfortunately it does not appear to honor the default sender address setting which is useful if you receive to multiple addresses but want to send from a specific one. A search shows other people are encountering this so I thought I'd post a workaround I found: I left the imap account active but went in and turned off its fetch schedule and made sure everything about it was set to manual, etc. I only interact with the imap account, the push one exits only to receive the new mail notifications. It's pretty smooth, although if you leave unread messages when exiting mail, the mail badge will be twice the actual number. It also has the benefit that the imap version actually deletes deleted emails while the sync version moves them into "All Mail"