Please update your Cornerstone Gmail settings before May 30
Starting May 30, 2022, Google will stop supporting the use of third-party apps or devices that ask you to sign into your Google Account using only your username and password. But here’s the good news: if you currently send email from Cornerstone using a Gmail account, it’s easy to update your settings so that you won’t experience any disruption in service.
/en/blogs/cornerstone-news/please-update-your-cornerstone-gmail-settings-before-may-30/