I have invoiced customers and want to send emails from the system. I click send but nobody has received them

hi john-harbingerhe,

Thanks for reaching out to us here.  Welcome!  QuickBooks Online is currently experiencing an issue with sending customer invoices.  Our Development Team is working diligently to resolve the issue as soon as possible.  If you'd like to receive an email notification when this has been fixed please contact us.

With regards to the comments on your invoices, you can follow these steps to add/edit the Message to Customer;

1. Open your Settings ⚙ and select Custom form styles

2. Click Edit in the Action column for your default form

3. Open the Content tab and then hit the Edit ✎ in the footer section

4. Use the ▼ dropdown menu to select the forms you'd like to see the Message to customer on

5. Enter your message and select your font size

6. Hit Done to save your changes

If you have any other questions, please feel free to reach out again.  We'd be happy to help!

This issue started for me June 1, 2023. 

I have tried reentering company and customer email addresses as other QB support messages suggest but no change. I am able to use a different email address in the cc: field when sending invoices but that's a pain and not professional.

Let me know when this is resolved.

Hi there DLHaddie,

It's vital that all your transactions be entered correctly so that your books can be well balanced. QuickBooks Online is a great tool able to help you create and send invoices to your customers so they know the amount owed. I can point you in the right direction for assistance with delivery errors when sending transactions.

To resolve any errors related to sending invoices or other transactions, I recommend first trying the steps in this article to ensure that everything is correctly set up for emailing these transactions. If the error is still present after that, I recommend that you reach out to the support team outside the Community. They'll be able to view the error with you in a secure location so that you can send this transaction to your customer, or notify the engineers of the error if it still persists after troubleshooting. You can reach them with these steps:

Schedule a Callback or start a Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
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If you have any further questions, please feel free to ask them here.