If Google is hosting your corporate mail server and you are using Dataflex to send/receive email with non-gmail accounts then oAuth2 is in your very near future. It was hairy and took days to both understand and implement in a non-web DF19.1 desktop Windows 10 environment. There are a couple different ways to do it... and I am sharing what we've found so far that is working well, so that you may lose less hair then I did: https://www.example-code.com/datafle...mailOAuth2.asp. Contact me directly if you need more info. Enjoy.