To add more than one Gmail email account to your Android phone is very easy. In the “Settings” section of the phone, look for the “Accounts & Sync” option. Once you are in the “Accounts & Sync” section, select the “Add Account” option to add another account. Here you can just following the instructions and enter in the second Gmail account’s username and password. Once all the information are entered and saved. The phone will automatically sync to your email accounts and grab any new emails from those accounts you have setup. But do remember, Android phone only allow one primary gmail account to sync and to use the Android Market Apps.