I would like to set the EnableAssignToEmail bit on a task list via CSOM after a list is created dynamically. I have found a way to do this in Powershell and in code using SPList:

Add-PSSnapin Microsoft.SharePoint.Powershell

$web = Get-SPWeb "http://foo/web"
$list = $web.Lists.TryGetList("Tasks")

$list.EnableAssignToEmail = $true

I do not see a specific method or property on SP.List in the CSOM SP.List API: http://msdn.microsoft.com/en-us/library/office/jj245826(v=office.15).aspx#constructors.

Is there some trick to get this enabled, or is it just not possible?


2 Answers 2


Shall work with a new CSOM Version: https://dev.office.com/blogs/new-sharepoint-csom-version-released-for-Office-365-august-2016-updated


Reflector shows us that EnableAssignToEmail is not decorated with the ClientCallable attribute, thus is not accessible via CSOM.

  • 2
    The real question is, is there another way of setting it (since it clearly is not available as a property of the list directly)? Feb 1, 2016 at 8:53
  • 1
    ...which is why there is a UV to request it, since there is not a method to set it.
    – user6024
    Feb 1, 2016 at 19:30
  • 1
    Not everything is gettable/settable in SPO via CSOM or PS compared to on prem, it's frustrating at times but 'tis the nature of a hosted service offering. Feb 2, 2016 at 20:09
  • Truly that's the case. Have seen some nice workarounds for setting stuff not really exposed before though (like Available page layouts etc.), so figured it was worth a shot to ask for an alternate way Feb 3, 2016 at 17:51

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