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MustangProgrammer's avatar
MustangProgrammer
Copper Contributor
Sep 17, 2021

Outlook 365 client vs Microsoft Graph API

Does anyone know if the Outlook 365 Client is communicating with the cloud using some sort of MAPI or is it using HTTP like Microsoft Graph?  Trying to determine why the Microsoft graph portion of my application is failing.  I am not getting sender or from fields on my queries.  Is there something I'm missing?  Is there a way for me to compare the email that is failing in my app to the outlook client on a lower level?

office 365

2 Replies

  • pvanberlo's avatar
    pvanberlo
    MCT
    Sep 17, 2021
    It depends on which client, but let’s assume we’re talking Outlook on Windows then yes, it will likely use MAPI over HTTP.

    Which Graph API resource are you using? If specific attributes are not returned, did you try to force them to be returned using the $select operator?

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