For customers experiencing any issues with their service, we recommend the best thing to do first is check if there's an outage.
Check our Service Status page as this is where we list outages for TPG Internet, Mobile, Phone and Email.
In your case, we are suspecting an issue with your email server settings and we recommend that you visit this link: Email Settings
It can also help you set up the TPG email on popular third party email clients, such as ; Outlook 2007, Outlook 2010, Mac Mail, and Android phones.
Let us know if we can be of further assistance.