I'd be happy to provide some details to troubleshoot the invoices that didn't go through the email and route you to the support team, @sue140.
To start, if customers aren't receiving invoices sent through QuickBooks, it could be due to email delivery issues, incorrect email addresses, or the invoices being marked as spam. Check the email settings, ensure correct recipient information, and ask your customer to check their spam or junk folders. Here are some solutions to troubleshoot if customers aren't receiving emails:
Go to the Company section, then select Edit in Contact info.
Review each email address and make changes as needed.
Select Save, then Done.
Solution 2: Clear and re-enter your email:
Go to Settings , then select Account and settings.
Go to the Company section, then select Edit in Contact info.
Clear the Company email field and enter the desired address as is, even if it appears correct. (Note: Be sure not to use any extra characters or spaces before, within, or after the address you enter).
Select Save, then Done.
Send yourself a test transaction.
If you still don't receive the email, try using a different email address that has a different domain (for instance, if you were using a Gmail email address, try a Hotmail or Yahoo address instead).