UPDATE
Due to a request I have modified the instructions below to include a complete step by step rather than branching to a different page for instructions.
Google recently updated Google Sync to include support got push GMail. This is very nice but I came across two problems.
First the search feature built into my iPhone does not allow me to ’search the server’ using the email associated with Google Sync [thanks to Aaron Krill of Krillr.com for finding this bug).
The second problem was one I found a way around. I normally send email from eric@nemchik.com using the GMail web interface thanks to their 'Send From' feature. But Google Sync did not want to let me do this.
Heres how to solve this problem;
- Go to settings > Mail, Contacts, Calendars > [Your Google Sync Account] > Account Info
- Change the Email field to the email alias you normally send from
- Back out (don’t worry it will auto save what you enter)
- Note: Setup instructions below are for iPhone or iPod touch devices running software version 3.0.To configure IMAP for your iPhone or iPod touch, just follow these steps:
- Make sure you’ve enabled IMAP in your main Gmail settings
- On your iPhone or iPod touch’s home screen, tap Settings
- Tap Mail
- Tap Add Account…
- Tap Other
- Tap Add Mail Account
- Enter your account information, being sure to use your full Gmail address (or full Google Apps email address)
- Tap Save
- For Incoming Mail Server:
- Host Name is ‘imap.gmail.com’
- User Name is your full Gmail address, including ‘@gmail.com’ (or full Google Apps email address)
- For Outgoing Mail Server:
- Host Name is ’smtp.gmail.com’
- User Name is your full Gmail address, including ‘@gmail.com’ (or full Google Apps email address)
- Tap Save
- Check our recommended client settings, and adjust your client’s settings as needed.
What if I tap ‘Gmail’ instead?Archiving and deleting messages will work differently. Our instructions ensure Gmail works as designed.

NOTE: Before proceeding replace both the ‘Address’ and ‘Description’ fields with your preferred Alias address (full email address whatever@whatever.com) * see star below


- Once you have done the final save, tap on the account you just created and erase the Incoming Mail Server Host (imap.gmail.com) and leave this field blank (this will prevent you from receiving duplicate email but still allow you to send outgoing from your alias)
Explanation:
The IMAP account you just created will NOT receive incoming mail, so if someone emails you your phone will only show the mail on the Google Sync account. The only reason the IMAP account exists is to provide the SMTP server settings used for sending outgoing mail. The instructions above (when followed correctly) will trick the iPhone into using the SMTP settings for outgoing while still using the Google Sync for incoming, and you should not need to switch the ‘from address’ on the iPhone (the alias address should be used by default).
You will now see 2 email accounts in your Mail app. Mine looks like this:
The top one is the alias ‘Send From’ address and you can completely ignore it. Keep the Google Sync account open and try sending an email to a friend and ask what address it comes from.
* This post has been edited to provide instructions found on this Google Support Document. The instructions as they are seen on this page will NOT be kept up to date with newer material as it becomes available so I recommend checking the official page for any deviating instructions while still following the notes I have made in red above.



