Hello, David.
I can share some information about getting email notifications when receiving payments.
You can advise your client to go to their Merchant Service Center account to set their Email Alerts section for Receive Credit Card Deposit Notification.
Here are the steps:
- Log in to https://merchantcenter.intuit.com.
- Go to Account and select Settings & Alerts.
- In the Email Alerts section, select Yes for Receive Statement Notification.
- Click on Save Changes.
Check out this article for more information about turning on or off customer notification emails: Turn on or off Customer Notification Emails for Recurring Payments.
Here's also more information on what to do if you don’t receive emails from QuickBooks Payments: Unable to receive Intuit email from QuickBooks Payments.
In case you need a reference on how to record payments you receive from customers, you can visit this article: How to record a customer payment.
Please post again or leave a reply in this thread if you have more questions about getting email notifications when receiving payments. I'll be here to answer them. Keep safe, and have a wonderful day!