Password not accepted when emailing invoices through QB Desktop 2020. I have tried several email addresses as my default, with zero success. Worked fine in desktop 2019

Thanks for reaching out to the Community, @srbunge240.

I have some troubleshooting steps for you to fix password issues when emailing invoices. 

Here's how:

1. Update QuickBooks to the latest release. 
2. Check your email settings to check if these may be blocking your emails from QuickBooks. 
3. Check antivirus settings. 

For more detailed steps on the process above, check this article: Fix webmail password issues in QuickBooks Desktop.

Reach back out to me by commenting below if you have any questions concerning QuickBooks. I'm always here to help.