I appreciate your time for reaching out to the Community, DoubleACampGuy.

For now, you can receive a notification alerting an invoice has been paid via email based on your merchant account set up. You may consider looking for a third-party application that integrates with QuickBooks Online. This way, you'll be able to get a text alert when an invoice has been processed.

You can find apps here: https://quickbooks.intuit.com/app/apps/home/.

While we continue to make your experience with us even better, I would also encourage you to visit our QuickBooks Blog site to be updated with the recent developments made in QBO.

If I can be of any additional assistance, please feel free to let me know by commenting below.