User Receiving Unwanted Notifcation when Invoices for Business Unit Approved

Summary: A manager is asking if it is possible that they stop receiving emails for a Business Unit when invoices are approved.

Content (required):

The manage asked us is there a way she can stop receiving emails for a Business Unit when their payables invoices are approved. "I keep getting Message Rate limit exceeded in my email when I validate and send these invoices for approval." I am not aware of a solution to this problem out of the box for one particular user, but I thought I should ask.

Version (include the version you are using, if applicable):

21D (11.13.21.10.0)