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Mailbox custom field

Posted on by 188

Is it possible to create a custom field on the Mailbox entity?

I was just advised by a Microsoft rep to create a few custom fields in the mailbox entity while their engineers resolve an issue. However, when trying to create the fields I realized that the "New" button isn't available in the mailbox entity. Is this a bug, limitation, or am I doing something wrong?

  • meelamri Profile Picture
    meelamri 13,204 User Group Leader on at
    RE: Mailbox custom field

    Please don’t forget to verify my answer by clicking YES. It will close this thread, and help others to find the answer.

  • Jerett Crumbley Profile Picture
    Jerett Crumbley 188 on at
    RE: Mailbox custom field

    That's incredibly interesting and insightful. Thank you.

  • Verified answer
    meelamri Profile Picture
    meelamri 13,204 User Group Leader on at
    RE: Mailbox custom field

    Hello, 

    I do not think it is possible to create a new custom field in the mailbox entity. The entity metadata gives us the possibility to know if we have the possibility to create a new custom field or not. For example, you can access the metadata of the mailbox entity by using the following query: 

    https://yourOrg.crm4.dynamics.com/api/data/v9.0/EntityDefinitions(LogicalName='mailbox')

    Result: 

    pastedimage1624371742231v1.png

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