Seems like you'll have to reauthorize your QuickBooks Desktop to resume using Gmail, @cmcyr.
Let me share further information about it and guide you through the steps.
Last November 11, 2019. Google's privacy policy has been updated. Wherein, any app accessing Google data needs to be reauthorized. You may get a message saying that the app isn't verified if it's not reauthorized.
When Gmail is set up to use enhanced security, you'll get a pop-up message to authorize QBDT when sending a report or transaction.
Please note to also install the latest release of QuickBooks Desktop. This prevents the error "QuickBooks is unable to send emails due to network connection failure" from showing.
- Click on Email from any open transaction or report in QuickBooks.
- Hit Send, and you may be prompted to sign in using your Intuit credentials.
- Click on Continue from the Webmail Authorization page.
- Once done, click on Allow.
Here's what to do in case you'll have issues logging in when you use your email service: Fix webmail password issues in QuickBooks Desktop.
Let us know if you need any more help with this matter or with QuickBooks in general. The Community is available 24/7 for assistance. Stay safe always.
