Configuring BigPond email in the Gmail app facilitates the management of messages on the mobile device. To start, launch the Gmail app and go to the “Settings” tab. Click on the “Add Account” button followed by “Other.” Type in your complete BigPond email address, for example, [email protected], and click on “Manual Setup.”
When entering the incoming server, use IMAP so that users can have access on more than one device. The server is imap.telstra.com, the port is 993, and SSL encryption must be activated. For the outgoing server, you set the SMTP settings to configure the outgoing settings. The server is smtp.telstra.com, the port is either 465 or 587, and SSL is enabled. Ensure that “Authentication” is on and the user’s credentials are a full BigPond email address and password.
Once these details are filled, the Google Gmail app will attempt to verify whether the entered settings work. Upon completing this procedure, BigPond mail will work together with the Google Gmail app, allowing sending and receiving messages without a problem. Should there be errors, make sure the server settings are correct and the internet is available. For submission while seeking further information, contact Telstra support for assistance.

More Info: https://www.bigpondonlineservice.com/blog/bigpond-customer-care-victoria/

More Info: https://www.bigpondonlineservice.com/blog/change-bigpond-password-through-telstra-profile/