By default, notifications for invoices are toggled off. However, you can turn it on any time by going to Settings > Notifications.
Click on Edit preferences
Click the checkbox
Add or remove the email addresses to send the notifications to
Click Save changes
💡 Tip:
You can view and download all generated invoices on the Hub. So no worries that you will miss them even if you don't turn on notifications for them. See View and Download Invoices.