What sort of email client (eg Optus Webmail, Outlook etc.) do you use your Optusnet email with? Just to ensure that it is not an issue with the email client, it might be worth signing in with an email application that you don't normally use to confirm this.
If the same issue happens even when you are accessing your Optusnet email account from a different email client, we would recommend messaging us via the My Optus app.
Our Messaging team is available 24/7 and are ready to assist customers as quickly as possible.
If for some reason you’re unable to use the My Optus app, please send a private message to the official Optus Facebook or Twitter page for further assistance.
thank you for this. It is Mail. Which is really just a reflection of webmail I believe - but I have checked webmail and contacted Optus, who are still looking in to it - but so far no one knows??