Need to change email notification or turn off notification for "The tax return you filed has been accepted by CRA's NETFILE service"

[mangotaxes]

For a couple years now, when I finish filing my tax returns, the email notification that says "Hi NAME,
Congratulations! The tax return you filed has been accepted by CRA's NETFILE service!" has been going to an old email. This was before we were forced to make an Intuit account. Back then, I used an old email address and want to change it or just turn off the notification. How can I do this? When I filled out my forms, I used my new email address, but that didn't work. There is no option to switch emails. My old email doesn't have an Intuit account or CRA account either so clearly this old email saved somewhere on Intuit/Turbotax's side.