Accessing an Exchange Online (365) mailbox through EWS using OAuth2

[JamesMurdoch]

Would you be able please to direct me to a C# code sample to demonstrate connecting to an exchange online (365) mailbox via EWS and using OAuth2?

The documented examples appear to use basic authentication where the username and password is sent to exchange directly.

I understand setup is required in the Azure Active Directory, but it is the client-side Aspose code sample I am interested in.

It would be for OAuth permissions of type ‘Application permissions’ and not ‘Delegated permissions’.

Thanks in advance,

[mudassir.fayyaz]

@JamesMurdoch

I suggest you to please visit the following thread link for your kind reference.

OAuth2 support for O365

@t1jsw, The EWS client supports OAuth authentication. Please check the below code sample to see how to use this feature. ITokenProvider tokenProvider = new AzureROPCTokenProvider("Tenant", "ClientId", "EMail", "Password"); NetworkCredential credentials = new OAuthNetworkCredential(tokenProvider); IEWSClient client = EWSClient.GetEWSClient("EWSUrl", credentials); OAuth supports different ways for retrieving access token, and Microsoft may change them. That’s why you have has to implement simp…