Hi Community Microsoft wil deprecate basic Authentication, so users will need OAuth2 to be included in the email tool.
https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/deprecation-of-basic... Microsoft is removing the ability to use Basic authentication in Exchange Online for Exchange ActiveSync (EAS), POP, IMAP, Remote PowerShell, Exchange Web Services (EWS), Offline Address Book (OAB), Outlook for Windows, and Mac. This change will be efective on October 1, 2022. Best regards, JP