Migrate Mail Data
Here's how to migrate your previous mail that stored in Petra local server to your new Google Apps account.
  1. Click the gear icon in the upper right, then select Settings.
  2. Open the Accounts and Import tab. (For Google Apps domains, open the Accounts tab.)
  3. In the Check mail using POP3 section, click Add POP3 email account.
  4. Enter your email address with  username@peter.petra.ac.id, then click Next Step.
  5. Gmail will populate sample settings, update it accordingly:
    • username: your username, 
    • password: the same you use log in here
    • POP3 server: peter.petra.ac.id
    • port: 110
  6. Click Add Account.
  7. Once your account has been added successfully, you'll be asked to setting it as a custom From address. Just ignore it since it is the same email address by clicking No and press Finish.
  8. After the migration is done (all old mails downloaded), please delete this POP3 account.
Since only email in inbox will be migrated, if you want to migrate other email from different folder, you can move it to inbox first.