You will need a phone to set up 2-Step Verification at first, however these options are available afterwards.
After 2FA is enabled you will be prompted to re-authenticate your Apple Mail client. A drop down will appear in Mail.app. It is a good idea to have your phone handy for the initial process.
Click on the 'Open Safari' button
You will then be prompted for your Crystal Gsuite credentials. If other credentials are listed you will need to manually fill in your Crystal GSuite info.
Then procede with your password
On your device that you set up from myaccount.google.com you should receive a one time code.
Enter the code and then be sure to allow the permissions in the following screen.
You will likely not be prompted to do this again for some months.
This version of the page was edited by Justin O'Connor at 2021-03-03 17:00:34. View the most recent version.