Provide a means of getting the recipient NDR diag code (and other such information) via EWS
With MAPI, you could get the NDR recipient information (PRNDRDIAGCODE, PRNDRREASONCODE, PRREPORTTEXT, PRREPORTTIME,PRSUPPLEMENTARYINFO ). This doesn't seem to be exposed in any easily accessible (non-error prone) manner in EWS. It'd be nice to have it!
Thank you for the idea! Although we appreciate your time and effort to give us this feedback, this doesn’t align with the general strategic vision of our products. We are focused on adding more capabilities to the REST API, so this is not something on our roadmap right now.