Hello ss2019,
Welcome to the Community. I'm here to lend a hand with your concern about emailing invoices in QuickBooks Desktop.
Our QuickBooks system is currently compatible with the Office 365 program as long as you install it locally on your computer. Before you perform any troubleshooting steps, let's also make sure you have the latest release to ensure you have all the new updates and features.
For more insights into the list of supported software, you can check the system requirements through this article:
System requirements for QuickBooks 2019 and Enterprise Solutions 19.0.
If you're still unable to email within QuickBooks, you can also run a repair for the Office 365 program. For your guidance, please visit this support link:
Repair an Office application.
In case all fails, I recommend reaching out to our Support Specialists this time. They'll be able to check further why you're unable to send them over since there are no changes made from your end.
Here are the steps:
- Open QuickBooks Desktop.
- Click the Help tab at the top menu bar.
- Click QuickBooks Desktop Help.
- Click the Contact us hyperlink.
Let me know if you need anything from regarding the software compatibility. I'm always up to lend a hand.
