Error message example:

"Your Optusnet email has exceeded the daily send limit of 1 email. To avoid this limitation, you can set up authenticated SMTP in your email client using your email address and password or login to webmail.optusnet.com.au to send emails from there. For more information, jump onto the Optus website and search our Help & Support section for "Daily Send Limit". Learn more at https://www.optus.com.au/for-you/support/answer?id=20310".

If you've received the above error or been advised that your emails are not being received, you can resolve this by setting up Authenticated Email to your email client settings.

See, How do I set up Authenticated Email?

If this doesn't help, see, Can't send or receive email: OptusNet troubleshooting.

Email authentication is a process which allows email servers to confirm the legitimacy of an email's sender and its content. It may also be referred to as email validation.

To set up an iPhone to send / receive OptusNet emails, follow these steps:

Access the Settings on the handset

1. Select the Mail option
2. Select Accounts
3. Select Optusnet
4. Scroll until you see the section called Outgoing Mail Server
5. Ensure the settings reflect the following:
   • Outgoing server: mail.optusnet.com.au(exactly as shown here)
     • Port: 587
     • Encryption method: STARTTLS
       or
     • Port 465
       
     • Encryption method: SSL/TLS
   • username: <must show customer's full email address>
   • password: <must show customer's password>
   • Use SSL: Yes
   • Authentication: Password (exactly as shown here)
6. Ensure the changes are saved

If you are setting up mail for the first time on Microsoft Outlook, then follow the steps below:

1. Open Microsoft Outlook Client
2. Click File on the top corner on the left-hand side of your application.
3. Click on Add Account
4. Add your OptusNet email address under the field Email address.
5. Click Advanced Options, and check the box Let me set up my account manually
6. On this window, enter the details below:
   
   • Incoming mail
     
     • Server: mail.optusnet.com.au, Port: 993
     • Encryption method: SSL/TLS
   • Outgoing mail
     
     • Port: 587
     • Encryption method: STARTTLS
       or
     • Port 465
     • Encryption method: SSL/TLS
   • Note: If you prefer to utilise POP3 protocol, you must access the advanced settings of your client and change the following settings:
     • Incoming mail port - change to 110
     • Outgoing mail port - change to  587 for STARTTLS or 465 for SSL/TLS
7. Click Next
8. Enter your OptusNet email password
9. Click Connect

You should be able to see your mail now.

If you are setting up mail for the first time on Thunderbird, then follow the steps below:

1. Open the Thunderbird client and, under the Server settings, verify the configuration
   • Server Type: IMAP Mail Server
   • Server Name: mail.optusnet.com.au
   • Port: 993
   • User Name: username
   • Security Settings
     • Connection security: STARTTLS
     • Authentication method: Normal password
   • Server Settings (tick all three boxes)
     • Check for new messages at startup
     • Check for new messages every 10 minutes
     • Allow immediate server notification when new messages arrive
2. Verify the settings
   • Optusnet SMTP server - mail.optusnet.com.au (Default)
3. Verify SMTP settings
   • Description: Optusnet SMTP server
   • Server Name: mail.optusnet.com.au
   • Port: 587
   • Connection security: STARTTLS
     or
   • Port 465 
   • Connection security: STARTTLS
   • Authentication method: Normal password
   • User Name: username
4. Click OK

If you are setting up mail for the first time on Gmail Client, then follow the steps below:

1. Open the Gmail Client with your username/password
2. Click on the cog icon, which appears in the top left corner of the screen
3. Click on Add another email address
4. Add your OptusNet email address under the field 'What account do you want to import from?'
5. Click Continue
6. Step 1: Sign into your other email account
   • Enter the details
     • Password: [your Optusnet password]
     • POP username: [your OptusNet username]
     • POP service: mail.optusnet.com.au
     • Port: 995
     • Click the check box: Use SSL
   • Click Continue
7. Step 2: Import options
   • Click Start import
8. Step 3: Finish
9. Click OK
10. Click Add a mail account
11. Add your name and email address under the relevant fields
12. Click Next Step
13. Click Link accounts with Gamilify
14. Click Next
15. The screen "Confirm verification and add your email address" will appear. You'll receive a verification email from Google. You'll need to confirm and verify the new email account has been added

You should now be able to send/receive emails from OptusNet email accounts on Gmail client.

If you are setting up mail for the first time on Apple Mac, follow the steps below:

1. Open Mail on your Mac. Under the 'Choose a Mail account provider', select Other Mail Account
2. Click on Continue
3. Enter your name, OptusNet email address (e.g., someone@optusnet.com.au) and password, then click Sign In
4. You may get this error: "Unable to verify account name or password". We have not yet specified the Incoming Mail Server and Outgoing Mail Server fields
   • Leave the Username field as 'Automatic'
   • Incoming Mail Server: mail.optusnet.com.au
   • Outgoing Mail Server: mail.optusnet.com.au
5. Click Sign In
6. Click Done. (You can uncheck Notes if you don't want to sync Notes)
7. You'll see 'Account error' (highlighted in blue). We'll need to configure port settings for incoming and outgoing mail
8. To configure port for incoming and outgoing mail, select Mail→ Preferences
9. Enter these Server Settings:
   • Incoming Mail Server (IMAP)
     • User Name: <customer username>
     • Password: <customer password>
     • Host Name: mail.optusnet.com.au
     • Port: 993
     • Authentication: Password
   • Outgoing Mail Server (SMTP)
     • Account: <customer mail account, eg. someone@optusnet.com.au>
     • User Name: <customer username>
     • Password: <customer password>
     • Host Name: mail.optusnet.com.au
     • Port: 587 for STARTTLS or 465 for SSL/TLS
     • Authentication: Password (keep it as Password)
10. Click Save

You should be able to send/receive emails now.

Windows Live mail is an end-of-life client that is no longer supported by Microsoft. Customers are encouraged to use a more secure and up to date mail client, such as Outlook, Gmail or Apple Mail - refer instructions above on how to set up those clients.