Hotmail: Use a Gmail Account with Multiple Email Addresses in iPhone Mail

To access your Gmail account in iPhone Mail and send messages from all your addresses:

Now, for each additional email address:

Tap Settings on the iPhone Home screen.
Go to Mail, Contacts, Calendars.
Choose Add Account... under Accounts.
Select Other.
Enter your name under Name.
Now enter the email address you want to use under Address.
Tap a random string under Password.
Optionally, change the account's name under Description.
Tap Save.
Go to the POP tab.
Enter "g" (or any other string) for Host Name under Incoming Mail Server.
Enter "g" (or, again, anything else) for User Name under Incoming Mail Server.
Now enter "smtp.gmail.com" for Host Name under Outgoing Mail Server.
Tap your Gmail user name (what precedes "@gmail.com" in your Gmail address) for User Name under Outgoing Mail Server.
Enter your Gmail password for Password under Outgoing Mail Server.
Tap Save.
Now tap No in the Cannot Connect Using SSL alert asking you to try setting up the account without SSL.
Tap Save again.
Tap Save yet again.
Tap the newly set up account under Accounts.
Delete the text in all fields under Incoming Mail Server.
Press the Home button.
Make sure the new account is checked for new mail only manually.

You can now choose the desired email address when replying in Gmail or sending a new message. From time to time, go to the secondary Gmail accounts' Sent folders in iPhone Mail to delete sent emails (they are stored in Gmail's Sent folder automatically).

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