Change email format to [username]@domain

Set-StudentEmail.ps1

@@ -6,7 +6,7 @@
 
 .DESCRIPTION
     Scans all users in the target OU and sets their email address to
-    [FirstName][Surname]@[Domain]. Existing email addresses are skipped
+    [SamAccountName]@[Domain]. Existing email addresses are skipped
     unless -Force is used.
 
 .PARAMETER OU
@@ -45,7 +45,7 @@ param (
 Import-Module ActiveDirectory -ErrorAction Stop
 
 # Retrieve all users in the specified OU
-$users = Get-ADUser -Filter * -SearchBase $OU -Properties GivenName, Surname, EmailAddress
+$users = Get-ADUser -Filter * -SearchBase $OU -Properties EmailAddress
 
 if (-not $users) {
     Write-Warning "No users found in OU: $OU"
@@ -60,41 +60,33 @@ $skipped  = 0
 $errors   = 0
 
 foreach ($user in $users) {
-    $firstName = $user.GivenName
-    $surname   = $user.Surname
+    $username = $user.SamAccountName
 
-    # Skip users missing a first or last name
-    if ([string]::IsNullOrWhiteSpace($firstName) -or [string]::IsNullOrWhiteSpace($surname)) {
-        Write-Warning "SKIP: '$($user.SamAccountName)' is missing a first or last name."
-        $skipped++
-        continue
-    }
+    # Build the email — force lowercase
+    $email = "$($username.Trim())@$Domain".ToLower()
 
-    # Build the email — strip spaces and force lowercase
-    $email = "$($firstName.Trim())$($surname.Trim())@$Domain".ToLower()
-
-    # Check if email is already set (skip unless -Force)
+    # Check if email is already set and matches (skip unless -Force)
     if ($user.EmailAddress -eq $email -and -not $Force) {
-        Write-Host "OK:   $($user.SamAccountName) already has '$email'" -ForegroundColor DarkGray
+        Write-Host "OK:   $username already has '$email'" -ForegroundColor DarkGray
         $skipped++
         continue
     }
 
     if ($user.EmailAddress -and -not $Force) {
-        Write-Warning "SKIP: '$($user.SamAccountName)' already has email '$($user.EmailAddress)'. Use -Force to overwrite."
+        Write-Warning "SKIP: '$username' already has email '$($user.EmailAddress)'. Use -Force to overwrite."
         $skipped++
         continue
     }
 
     # Apply the email address
-    if ($PSCmdlet.ShouldProcess($user.SamAccountName, "Set email to '$email'")) {
+    if ($PSCmdlet.ShouldProcess($username, "Set email to '$email'")) {
         try {
             Set-ADUser -Identity $user.DistinguishedName -EmailAddress $email
-            Write-Host "SET:  $($user.SamAccountName) -> $email" -ForegroundColor Green
+            Write-Host "SET:  $username -> $email" -ForegroundColor Green
             $updated++
         }
         catch {
-            Write-Error "FAIL: Could not update '$($user.SamAccountName)': $_"
+            Write-Error "FAIL: Could not update '$username': $_"
             $errors++
         }
     }