How can i get email notification when a customer pays an invoice

Welcome to the Community forum, jkpaavola.

I'd be glad to assist you with the steps to set up email notifications for customer payments.

To receive notifications for paid invoices, let's enable your QuickBooks Payments preferences. Here's how:

1. Log in to https://merchantcenter.intuit.com.
2. Go to the Account menu at the top.
3. Select Settings & Alerts.
4. In the Email Alerts section, choose Yes for each notification you'd like to receive.
   • To get emailed each month when your payment statement is available, choose Yes for Receive Statement Notification.
   • To get emailed each time funds are deposited to your account, choose Yes for Receive Credit Card Deposit Notification.
5. Enter the email address where you'd like to receive this notifications. 
6. Click on Save Changes.

Upon receiving a notification about your invoice payment, you can visit this article to learn how to check on when QuickBooks deposits customer payments into your bank account: Find out when QuickBooks Payments deposits customer payments.

If you have any further questions or concerns, feel free to post them here in the Community or leave a comment on this thread, jkpaavola. We're always here to help you.