Hi @Eric Wisniewski​ 

You can use EWS OAuth to authenticate with the Exchange server for email automation. Register your application with the Microsoft Identity platform to obtain the client ID and tenant ID.

Note: When connecting to an Exchange Web Services (EWS) server, multi-factor authentication must be disabled, including in all organizational level security policies where multi-factor authentication might be enabled. If multi-factor is not disabled completely, users can encounter connection or authorization errors.