it is possible to use Exchange EWS to send an email via API and authenticate with Oauth

[jandreano]

It is possible to use the Exchange EWS API to be able to send an email, but the authentication is with Ouath, since I have only achieved it with Exchange Online and I cannot do it with Exchange On-Premises

[#2]

Hi @jandreano 

Oauth authentication is only supported by Exchange 2019 CU13.

check below article to enable it

https://learn.microsoft.com/en-us/exchange/plan-and-deploy/post-installation-tasks/enable-modern-aut...

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