When a recurring sales receipt shows payment failed, you and your customer will be automatically notified by email, @KSMiller. There is no feature to turn on.
After receiving an email, your customers are asked to update their payment method. For more information on what happens when a payment fails and which payment method to use with recurring payments, check this guided material: Recurring Payments Overview.
In addition, you can check these helpful resources for your reference:
If you have any other questions about payments or sending emails in QuickBooks, share them below. I'm here to help.
