Can't authenticate Gmail API no matter what I try. Using python. I set up proper python code and I get "Google hasn’t verified this app You’ve been given access to an app that’s currently being tested. You should only continue if you know that invited you." then i click continue, and then i get: "Something went wrong Sorry, something went wrong there. Try again." I've tried removing all 2 step authentication. // >! import statements SCOPES = ['https://www.googleapis.com/auth/gmail.settings.basic', 'https://www.googleapis.com/auth/gmail.readonly' ] flow = InstalledAppFlow.from_client_secrets_file( r'my_correct_path_to_secret_file' , scopes=['https://www.googleapis.com/auth/gmail.readonly']) creds = flow.run_local_server(port=0) >! Save the credentials for the next run with open('token.json', 'w') as token: token.write(creds.to_json()) >! Create the Gmail API client gmail_service = build('gmail', 'v1', credentials=creds) Continue reading...