Authenticating against Exchange Web Services using certificate based OAuth2 tokens

Overview This post contains step by step information on configuring your environment and authenticating against Exchange Web Services using certificate based OAuth2 tokens. The information in this blog post is only valid for connecting to Exchange Online mailboxes. Requirements In order to set up certificate based OAuth2 authentication you will require access to the Azure…

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Forwarding a message as an attachment using Graph or REST

There isn’t currently an easy way to forward a message as an attachment using REST, as the message: forward command does not have this option.  However, with the beta API, it is now possible to forward as attachment using the following technique.  Note that it is only possible to retrieve the MIME content of the…