- Open Apple Mail.
- Click ‘Mail,’ and select ‘Preferences…’
- Open the ‘Accounts’ tab, and click the plus sign (+) along the bottom to add a new account.
- Select ‘IMAP’ in the ‘Account Type’ drop-down menu.
- Enter your full email address in the format ‘username@your_domain.com.’

- Enter ‘imap.gmail.com’ next to ‘Incoming Mail Server’; enter your Gmail password; then click ‘Continue.’ Google Apps users: Enter the server name provided, don’t add your domain name in this step.

- For Outgoing Mail Server, enter ‘smtp.gmail.com’; select ‘Use Authentication’; enter your full e-mail address next to ‘User Name’; and enter your password. Then click ‘Continue.’ Google Apps users: Enter the server name provided, but enter your full email address at your domain as the User Name.

- If setup is successful, you’ll see the screen below. Then just click ‘Done.’

- Click the ‘Server Settings…’ button.

- Verify that ‘Outgoing Mail Server’ is smtp.gmail.com:username@gmail.com.
- Verify that ‘Server port’ is 587.
- Verify that ‘Use Secure Sockets Layer (SSL)’ is checked.
- Enter your full Gmail or Google Apps email address next to ‘User Name,’ enter your password, and click ‘OK.’

- Click ‘Advanced’ and check the box next to ‘Use SSL.’ (The port changes to ‘993.’)

- Check our recommended client settings, and adjust your client’s settings as needed.