Yes, this is possible, @ashpete. 

You'll receive an email notification within 1 hour after your client paid the invoice. 

If you didn't receive an email, these are the possible reasons: 

• It was moved to your Spam or Junk folder.
• You use a custom email domain (johndoe@mycompany.com) or an email client (Thunderbird, AOL, Outlook, Exchange). 
• Your internet service blocks the QuickBooks Payments email address.

First, let's open your email and go to the Spam or Junk folder. This way, you can check the invoice payment from there and move it to your Inbox.

If you're unable to find the notification on the two folders, let's add our email addresses to your contact list. To view them, see Step 2 through this article: Unable To Receive Intuit Email.

After that, send an email to any of the email addresses included in the article above. It helps your internet service recognize it as a friendly contact. If this doesn't work, I'd suggest contacting your IT person or domain provider for assistance to turn off "Sender ID filtering" temporarily. 

Lastly, we put the funds into your bank account once the payment is processed, depending on your deposit speed. For more information, check out this article: Deposit Schedules. Then, go to Step 1 and locate the QuickBooks Online sections. 

Just click the Reply button below if you have other concerns. The Community and I will be around to help you.