We need a similar guide for Microsoft EWS Authentication like you have under DX for asset Microsoft Graph API - Authentication - 1.1.0. We need to implement the same for setting up EWS with token generation along with App registration. Attached guide for reference (MS Graph API Auth)
It will help us for generating token and setting up EWS Authentication to work with mailbox related activities in Blueprism.
After further review we've decided not to pursue development of an EWS connector. This is based on Microsoft's deprecation of the Exchange Web Services API as documented in the below post on theor developer blog from 2018. Microsoft's guidance is for users to move to Microsoft Graph.
https://devblogs.microsoft.com/microsoft365dev/upcoming-changes-to-exchange-web-services-ews-api-for-office-365/
If and when we decide to build a connector for EWS, we will create a similar guide. In the interim, Microsoft's documentation is quite complete.