How to Sync Your Contacts Between Gmail Accounts
Gmail is a free email client that was designed to allow users to sync the contacts of their account with outside email programs like Outlook and Entourage. If you have two or more Gmail accounts and you want to consolidate all of your contacts into one account, the process might seem like it could take a lot of time and effort. However, this process is quite simple.
Log in to your Gmail account.
Select the "Contacts" tab at the bottom-left side of the screen.
Click on the "Select All" tab under the Search Contacts window. Wait for Gmail to highlight all of your contacts.
Click on the "Export" tab. Click on the "Everyone" tab under "Who Do You Want To Export?" Click on the "Google CSV" and then click on the "Export" tab.
Save the CSV to your desktop.
Log out of your Gmail account. Log in to your other Gmail account.
Click on the "Contacts" tab and then click on the "Import" tab. Click on the "Browse" button and find your CSV file on your desktop. Click on it and then click "OK."
Click on the "Import" tab at the bottom of the Import window to sync all of your contacts.