Why isn't the email function working

I'm here to ensure you can send your invoices to your customers, @jennifera2.

I've checked and found that this is a reported case. Rest assured that our engineers are working to fix this issue about customers being unable to receive emails.  

In the meantime, let's download the invoice as a PDF and send it manually from the Email provider direct. 

I suggest contacting our Phone Support Team, so you'll be added to the list of affected users and receive an email notification once we resolve the issue.

Here's how:

1. Sign in to your QuickBooks Online company.
2. Select the Help (?) menu.
3. Choose the Assistant tab.
4. Click the Talk to a human option.
5. Select Get help from a human.
6. Click either the Chat with us or Have us call you button.

Additionally, I'll be sharing these relevant articles you can utilize to help manage your invoices in QBO:

• Customize invoices, estimates, and sales receipts in QuickBooks Online
• Record invoice payments in QuickBooks Online

Feel free to leave a comment below if you have other issues about sending emails to your customers. I'll be happy to help you always. Keep safe!