Issues with invoice details displayed on emailed invoices.
What OS version? QuickBooks Mac uses AppleScript to tell Apple Mail how to create the email. If you've recently updated your OS then it may be a bug in Apple Mail. You may need to upgrade to QuickBooks Mac 2019 to get it fixed - assuming the OS you are on supports QB Mac 2019. Otherwise you have to manually check that the emails are correct and attach the PDF yourself if they aren't.