Powershell: Recursively Set Outlook Folder Permissions using Powershell

Get-MailboxFolderStatistics

Obtain a list of folders to apply permissions. The result is the FolderPath value that is returned in the format "/Folderpath".

Get-MailboxFolderStatistics owner | `
 Where { $_.FolderPath.Contains("FolderName") -eq $true }

Add-MailboxFolderPermission or Remove-MailboxFolderPermission

Use the Add-MailboxFolderPermission or Remove-MailboxFolderPermission cmdlets to assign (remove) permissions from a set of folders. The format for the folder name is "Mailbox:FolderPath" so you need to modify the result from earlier to accommodate the expected value.

The following example illustrates the example where Rose, Juanita and Lupe's manager (Hector) wants to grant these users access to his "Work" folder and all of its sub-folders.

$targetmailbox="Hector"

#Reset Permissions
cls
$targetmailbox="mailbox_name"
ForEach($f in (Get-MailboxFolderStatistics $targetmailbox | Where { $_.FolderPath.Contains("Inbox") -eq $true })) {
 $fname = $targetmailbox + ":" + $f.FolderPath.Replace("/","\");
 $userlistArray = @()
 #Purge existing permsissions and set defaults
 ForEach($g in (Get-MailboxFolderPermission $fname | select User,AccessRights)) {
  if ($g.User -like "NT User:domain\*") { 
   Remove-MailboxFolderPermission $fname -User $g.User -confirm: $false
  }
  elseif ($g.User -like "Default") {
   Set-MailboxFolderPermission $fname -User $g.User -AccessRights Author
  }
  elseif ($g.User -notlike "Default") {
   Remove-MailboxFolderPermission $fname -User $g.User -confirm: $false
  }
 }
 #Set owner permissions (modify users and rights to assign other permission values to specific users)
 $user=("Rose","Juanita","Lupe")
 ForEach ($targetuser in $user){
  Add-MailboxFolderPermission $fname -User $targetuser -AccessRights Owner
 }
}

#Report Permissions
cls
$targetmailbox="mailbox_name"
ForEach($f in (Get-MailboxFolderStatistics $targetmailbox | Where { $_.FolderPath.Contains("Inbox") -eq $true })) {
 $fname = $targetmailbox + ":" + $f.FolderPath.Replace("/","\");
 write-host $fname -BackgroundColor "Green" -ForegroundColor "Black"
 $userlistArray = @()
 ForEach($g in (Get-MailboxFolderPermission $fname | select User,AccessRights)){
  if ($g.User -like "NT User:domain\*") { 
   write-host " " $g.User ":" $g.AccessRights -BackgroundColor "Red" -ForegroundColor "Black"
  }
  elseif ($g.User -like "Default") { 
   write-host " " $g.User ":" $g.AccessRights -BackgroundColor "White" -ForegroundColor "Black"
  }
  elseif ($g.User -notlike "Default") { 
   write-host " " $g.User ":" $g.AccessRights
  }
 }
}