diff --git a/app/Controllers/EmployeeRestController.php b/app/Controllers/EmployeeRestController.php
index 01c6ceea..4ddd32a7 100755
--- a/app/Controllers/EmployeeRestController.php
+++ b/app/Controllers/EmployeeRestController.php
@@ -6477,7 +6477,7 @@ class EmployeeRestController extends AdminController
             $db = \Config\Database::connect();
 
             $clientData = $this->clientModel
-                ->select('id, client_name, email')
+                ->select('id, client_name, email, common_mails')
                 ->where('id', $clientId)
                 ->first();
 
@@ -6517,6 +6517,11 @@ class EmployeeRestController extends AdminController
                 $recipientEmails[] = trim((string) $clientData['email']);
             }
 
+            $clientCommonMails = array_filter(array_map('trim', explode(',', (string) ($clientData['common_mails'] ?? ''))));
+            foreach ($clientCommonMails as $commonMail) {
+                $recipientEmails[] = $commonMail;
+            }
+
             foreach ($branchHrEmails as $branchHrEmailRow) {
                 $recipientEmails[] = trim((string) ($branchHrEmailRow['email'] ?? ''));
             }
@@ -6527,9 +6532,18 @@ class EmployeeRestController extends AdminController
                 }
             }
 
-            $recipientEmails = array_values(array_unique(array_filter($recipientEmails, static function ($email) {
-                return filter_var($email, FILTER_VALIDATE_EMAIL);
-            })));
+            $uniqueEmails = [];
+            foreach ($recipientEmails as $email) {
+                $email = trim((string) $email);
+                if ($email === '' || ! filter_var($email, FILTER_VALIDATE_EMAIL)) {
+                    continue;
+                }
+                $emailKey = strtolower($email);
+                if (! isset($uniqueEmails[$emailKey])) {
+                    $uniqueEmails[$emailKey] = $email;
+                }
+            }
+            $recipientEmails = array_values($uniqueEmails);
 
             if (empty($recipientEmails)) {
                 log_message('error', '[DependentAddMail] No recipient emails found for client_id=' . $clientId . ', branch_id=' . $branchId);