Hey Rschreck33,
Mar 17, 2020 Use these quick tips — explained in more detail below — to resolve most problems with Apple Mail and Gmail: Check you can sign in on the Gmail website. Close Apple Mail and restart your Mac. Deactivate Gmail on your Mac, then activate it again.
Welcome to Apple Support Communities. I can see that you're having trouble adding your gmail account to the Mail app on your Mac. I like having access to all of my emails on my computer and want to help with get this working as it should. What happens if you force close the Mail app and re-add the account? How to force an app to quit on your Mac. Are you able to sign into the same account from a web browser? Also, try adding this account while your Mac is booted into safe mode and let us know what happens. Use safe mode to isolate issues with your Mac
Regards.
Mail App On Mac Won T Let Me Sign In Page
Jan 8, 2019 8:12 AM