Payment receive email toggle option

We input the requests for a majority of our external users and have noticed that since the latest release, it looks like all payment received emails are going out to the person who actually submitted the request. Additionally we are seeing the submitter email account automatically being added to the User(s) field when sending an Invoice email out.

If there could be an email toggle On/Off option in Invoice setup that we can change for submitter accounts so that no payment received emails go out that would help us out immensely.