The tonotify.me mail service was suspended in 2017


If you are seeing an error email with this address then you need to remove email forwarding from your own email account.
You will have created a forwarding address in your own email account to an @tonotify.me address many years ago. You can remove that forwarding now.

This is the help for removing forwarding for gmail accounts https://support.google.com/mail/answer/10957?hl=en