Zero Emails Being Received. As of 19/02/2024

I'd also feel upset when I'm not getting the right help, Mark. 

I can see specific cases or ongoing investigations about emailing invoices in QuickBooks Online.

I can see the challenges you encountered with invoices undelivered. For now, there isn't a specific time frame for when the issue will be resolved. Our engineering team doubles their time to settle the error as soon as possible. Furthermore, it would be best to contact our support team. This way, they can add you to the involved users. Feel free to follow the steps provided by my colleague above.

Here's how:

1. Log in to your account.
2. Click the Help button at the top right corner.
3. Go to the Search tab, then select Contact Us.
4. Enter a brief discussion with your concern, then click Continue.
5. Choose to Have us call you to connect with us.

For your convenience, here are the support hours for different QuickBooks Online plans:

Plus, Essentials, Simple Start:

• Monday to Friday: 6 AM to 6 PM PT
• Saturday: 6 AM to 3 PM PT

Advanced:

• Support is available anytime, any day.

Also, you might consider checking out this article here just in case you want to personalize your sales forms in QBO: Customize invoices, estimates, and sales receipts. 

Please bear with us as we're working on this. Keep me posted if you have any other questions or concerns about managing your invoices. The Community always has your back. Keep safe always.