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Add Delegates to a Mailbox with Powershell and the EWS Managed API

****Update if you looking for something to delete invalid delgates have a read of this http://gsexdev.blogspot.com/2011/03/dealing-with-invalid-delegates-with.html as well ****

****Update 2  for a better post on adding/removing and updating delegates see http://gsexdev.blogspot.com.au/2012/03/ews-managed-api-and-powershell-how-to.html
 

Someone emailed me about this one today and its one thing that can now easily be solved using the EWS Managed API. There’s already a good C# sample on MSDN for doing this http://msdn.microsoft.com/en-us/library/dd633621.aspx. To convert this to something you can use in Powershell once you have downloaded and installed the EWS Managed API would look like the following below. This example sets the calendarpermissions to editor and the inbox to read for full details of what other permissions you can set have a look at the SDK.
$delegatetoAdd = "delage@youdomain.com"

$dllpath = "C:\Program Files\Microsoft\Exchange\Web Services\1.0\Microsoft.Exchange.WebServices.dll"
[void][Reflection.Assembly]::LoadFile($dllpath)
$service = new-object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2007_SP1)

$windowsIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
$sidbind = "LDAP://<SID=" + $windowsIdentity.user.Value.ToString() + ">"
$aceuser = [ADSI]$sidbind

$service.AutodiscoverUrl($aceuser.mail.ToString())

$mbMailbox = new-object Microsoft.Exchange.WebServices.Data.Mailbox($aceuser.mail.ToString())
$dgUser = new-object Microsoft.Exchange.WebServices.Data.DelegateUser($delegatetoAdd)
$dgUser.ViewPrivateItems = $false
$dgUser.ReceiveCopiesOfMeetingMessages = $false
$dgUser.Permissions.CalendarFolderPermissionLevel = [Microsoft.Exchange.WebServices.Data.DelegateFolderPermissionLevel]::Editor
$dgUser.Permissions.InboxFolderPermissionLevel = [Microsoft.Exchange.WebServices.Data.DelegateFolderPermissionLevel]::Reviewer
$dgArray = new-object Microsoft.Exchange.WebServices.Data.DelegateUser[] 1
$dgArray[0] = $dgUser
$service.AddDelegates($mbMailbox, [Microsoft.Exchange.WebServices.Data.MeetingRequestsDeliveryScope]::DelegatesAndMe, $dgArray);

This script will add a delegate to the currently loged on user but this is something you may want to use impersonation for see http://msdn.microsoft.com/en-us/library/bb204095.aspx if you wanted to add a delegate to possiblly a large number of users or if you where doing this during mailbox provisioning. So this version of the script will use impersonation to access another users mailbox and add a delegate.
$mbtoDelegate = "user@domain.com"
$delegatetoAdd = "delegate@domain.com"


$dllpath = "C:\Program Files\Microsoft\Exchange\Web Services\1.0\Microsoft.Exchange.WebServices.dll"
[void][Reflection.Assembly]::LoadFile($dllpath)
$service = new-object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2007_SP1)

$windowsIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
$sidbind = "LDAP://<SID=" + $windowsIdentity.user.Value.ToString() + ">"
$aceuser = [ADSI]$sidbind

$service.AutodiscoverUrl($aceuser.mail.ToString())
$service.ImpersonatedUserId = new-object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SmtpAddress, $mbtoDelegate);

$mbMailbox = new-object Microsoft.Exchange.WebServices.Data.Mailbox($mbtoDelegate)
$dgUser = new-object Microsoft.Exchange.WebServices.Data.DelegateUser($delegatetoAdd)
$dgUser.ViewPrivateItems = $false
$dgUser.ReceiveCopiesOfMeetingMessages = $false
$dgUser.Permissions.CalendarFolderPermissionLevel = [Microsoft.Exchange.WebServices.Data.DelegateFolderPermissionLevel]::Editor
$dgUser.Permissions.InboxFolderPermissionLevel = [Microsoft.Exchange.WebServices.Data.DelegateFolderPermissionLevel]::Reviewer
$dgArray = new-object Microsoft.Exchange.WebServices.Data.DelegateUser[] 1
$dgArray[0] = $dgUser
$service.AddDelegates($mbMailbox, [Microsoft.Exchange.WebServices.Data.MeetingRequestsDeliveryScope]::DelegatesAndMe, $dgArray);

I've put a download of the two scripts here
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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.

All code contained herein is provided to you "AS IS" without any warranties of any kind. The implied warranties of non-infringement, merchantability and fitness for a particular purpose are expressly disclaimed.