Send an email to given user from the registered Application on Azure

Question

I want to send an email to given user from the registered Application on Azure.

something like this(MS graph API)

https://graph.microsoft.com/v1.0/apps/{tenantid/appid}/sendMail

Answer 1

You can't send email from an an ApplicationId or Service Principal, it needs to come from either a real user or a shared mailbox. If your using the client credentials flow https://learn.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-client-creds-grant-flow and you have assigned the Application permission for Mail.Send then your application can send a message using a user's or shared Maibox Sendmail endpoint eg

https://graph.microsoft.com/v1.0/users/******@mailbox.com/sendMail