You can use the Gmail interface to send and receive emails using an email account you create with your domain. By setting up your domain's email address as a POP3 and SMTP account in your Gmail account, you can use Gmail as an email client (much like you would use Outlook, Mac Mail, or Thunderbird). This article explains how.
Set up Gmail to Send/Receive Email for Your Domain
Step 1. Log into your Gmail account.
Step 2. Click on the Cog drop-down menu (in the upper-right) and select Settings.
Step 3. Click the Accounts tab.
Step 4. Next to Check mail from other accounts:, click Add a mail account.
Step 5. Enter the email address you created for your domain and click Next.
Step 6. Enter the POP3 settings for your domain's email address. Then click Add Account.
You will see a message stating Your mail account has been added.
Step 7. To continue to set up SMTP in Gmail, select Yes and click Next Step.
NOTE: If you do not want to send emails for your domain through Gmail, click the No radio button. You don't need to follow the next steps.
Step 8. Enter your Name, as you would like it to appear when sending emails from this account. Also, ensure that the check box for Treat as an alias is checked.
Click the Next Step button to proceed.
Step 9. On the Send mail through your SMTP server page, fill in your SMTP Server (typically "mail.proudaustralian.com"), Username (full email address), and Email Password.
Step 10. Now, Gmail will email a verification code to the email address you just added. You can either click the link in the email or copy/paste the code into the text box and click Verify.
Now you will see your domain's email address in the Send mail as and the Check mail from other accounts sections.