BigPond Send Emails Aren’t Appearing in the Sent Folder?

Your BigPond emails not appearing in the Sent Items folder could be due to your email client’s settings or could be due to some form of synchronization issues. For starters, consider looking in the email client you’re using (for example, Outlook or Thunderbird) for the feature that allows the sent items to be saved in the Sent Items folder, and make sure the option is selected. You should be able to find this in the account settings or preferences for the BigPond webmail-only ComRes account.

In case you are an IMAP user, and the Sent folder is not well configured, it should be mapped to the folder on the server. In some cases, the SMTP features and settings weren't properly configured, meaning your email client never synced with the server, and a local Sent folder was created. You may need to manually select the correct folder for sent emails in the email client settings. Users accessing BigPond emails via webmail should make sure they don’t have a filter or haven’t hidden the Sent Items folder.

If the issue continues, send a test email and check if the email has been successfully sent out. Verify the following information regarding the SMTP settings: smtp.telstra.com; port 465 or 587, SSL is enabled. If all these fail to help in resolving the problem, Bigpond Customer Support for further assistance should be sought.

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