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Showing the client that was used to create or update an Appointment in Exchange 2013/16 using EWS

Previously I posted an example on Mining the Client information on Sent Messages in EWS to report on what client is being used in this post . For Calendar appointments there is a simular but different property that gets set when you either create or update a Appointment eg


(This property is set by the Exchange Store based on what client is being used)

 I've put together a script that aggregates this property and produces a summary report like


Its also produces an export report of all the appointments that looks like the following so you can see at the appointment level what client is being used.


I've put this script up on GitHub here https://github.com/gscales/Powershell-Scripts/blob/master/ShowCalendarClients.ps1
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All sample scripts and source code is provided by for illustrative purposes only. All examples are untested in different environments and therefore, I cannot guarantee or imply reliability, serviceability, or function of these programs.

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