Quickbooks desktop pro 2020

I'll definitely help you with this, Akcustomtrim.

Let's make sure that our QuickBooks is updated to the latest release. Here's how:

1. From the Help menu select Update QuickBooks Desktop.
2. On the Options tab, click Mark All, then Save.
3. Go to the Update Now tab.
4. Mark the Reset Update box and select Get Updates.

Now, try sending an invoice. If we're still unable to send one, we can check and review the email settings and filter preferences from our provider.

We can refer to this article for the detailed steps and information about fixing webmail password: Fix webmail password issues in QuickBooks Desktop

I'm always here if you need further assistance.