Disable sending any and all e-mails to specific accounts?

[DanielGingras]

Is there a way to disable IP from sending any and all e-mails to an account? I have a class of user that needs access to some store items but the store messages (e.g., invoices, renewal notices, etc.) are confusing to them. I've had a few calls from upset customers because they got a message saying "payment received for <product>" thinking I charged them even though it was all free and the invoice itself reflects that. I can't really change the wording of the e-mails themselves since this product is on sale for regular users, I just need IP Commerce to not send notifications like payment received or send them the renewal notice to customers I manually designate.