diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/functions.admin.inc.php b/mailcow/src/mailcow-dockerized/data/web/inc/functions.admin.inc.php
new file mode 100644
index 0000000..bb0400e
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/functions.admin.inc.php
@@ -0,0 +1,282 @@
+<?php
+function admin($_action, $_data = null) {
+  if ($_SESSION['mailcow_cc_role'] != "admin") {
+    $_SESSION['return'][] = array(
+      'type' => 'danger',
+      'log' => array(__FUNCTION__, $_action, $_data_log),
+      'msg' => 'access_denied'
+    );
+    return false;
+  }
+  global $pdo;
+  global $lang;
+  $_data_log = $_data;
+  !isset($_data_log['password']) ?: $_data_log['password'] = '*';
+  !isset($_data_log['password2']) ?: $_data_log['password2'] = '*';
+  switch ($_action) {
+    case 'add':
+      $username		= strtolower(trim($_data['username']));
+      $password		= $_data['password'];
+      $password2  = $_data['password2'];
+      $active     = intval($_data['active']);
+      if (!ctype_alnum(str_replace(array('_', '.', '-'), '', $username)) || empty ($username) || $username == 'API') {
+        $_SESSION['return'][] = array(
+          'type' => 'danger',
+          'log' => array(__FUNCTION__, $_action, $_data_log),
+          'msg' => array('username_invalid', $username)
+        );
+        return false;
+      }
+
+      $stmt = $pdo->prepare("SELECT `username` FROM `admin`
+        WHERE `username` = :username");
+      $stmt->execute(array(':username' => $username));
+      $num_results[] = count($stmt->fetchAll(PDO::FETCH_ASSOC));
+
+      $stmt = $pdo->prepare("SELECT `username` FROM `domain_admins`
+        WHERE `username` = :username");
+      $stmt->execute(array(':username' => $username));
+      $num_results[] = count($stmt->fetchAll(PDO::FETCH_ASSOC));
+
+      foreach ($num_results as $num_results_each) {
+        if ($num_results_each != 0) {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => array('object_exists', htmlspecialchars($username))
+          );
+          return false;
+        }
+      }
+      if (!empty($password) && !empty($password2)) {
+        if (!preg_match('/' . $GLOBALS['PASSWD_REGEP'] . '/', $password)) {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => 'password_complexity'
+          );
+          return false;
+        }
+        if ($password != $password2) {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => 'password_mismatch'
+          );
+          return false;
+        }
+        $password_hashed = hash_password($password);
+        $stmt = $pdo->prepare("INSERT INTO `admin` (`username`, `password`, `superadmin`, `active`)
+          VALUES (:username, :password_hashed, '1', :active)");
+        $stmt->execute(array(
+          ':username' => $username,
+          ':password_hashed' => $password_hashed,
+          ':active' => $active
+        ));
+      }
+      else {
+        $_SESSION['return'][] = array(
+          'type' => 'danger',
+          'log' => array(__FUNCTION__, $_action, $_data_log),
+          'msg' => 'password_empty'
+        );
+        return false;
+      }
+      $_SESSION['return'][] = array(
+        'type' => 'success',
+        'log' => array(__FUNCTION__, $_action, $_data_log),
+        'msg' => array('admin_added', htmlspecialchars($username))
+      );
+    break;
+    case 'edit':
+      if (!is_array($_data['username'])) {
+        $usernames = array();
+        $usernames[] = $_data['username'];
+      }
+      else {
+        $usernames = $_data['username'];
+      }
+      foreach ($usernames as $username) {
+        $is_now = admin('details', $username);
+        if (!empty($is_now)) {
+          $active = (isset($_data['active'])) ? intval($_data['active']) : $is_now['active'];
+          $username_new = (!empty($_data['username_new'])) ? $_data['username_new'] : $is_now['username'];
+        }
+        else {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => 'access_denied'
+          );
+          continue;
+        }
+        $password     = $_data['password'];
+        $password2    = $_data['password2'];
+        if ($active == 0) {
+          $left_active = 0;
+          foreach (admin('get') as $admin) {
+            $left_active = $left_active + admin('details', $admin)['active'];
+          }
+          if ($left_active == 1) {
+            $_SESSION['return'][] = array(
+              'type' => 'warning',
+              'log' => array(__FUNCTION__, $_action, $_data_log),
+              'msg' => 'no_active_admin'
+            );
+            continue;
+          }
+        }
+        if (!ctype_alnum(str_replace(array('_', '.', '-'), '', $username_new))) {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => array('username_invalid', $username_new)
+          );
+          continue;
+        }
+        if ($username_new != $username) {
+          if (!empty(admin('details', $username_new)['username'])) {
+            $_SESSION['return'][] = array(
+              'type' => 'danger',
+              'log' => array(__FUNCTION__, $_action, $_data_log),
+              'msg' => array('username_invalid', $username_new)
+            );
+            continue;
+          }
+        }
+        if (!empty($password) && !empty($password2)) {
+          if (!preg_match('/' . $GLOBALS['PASSWD_REGEP'] . '/', $password)) {
+            $_SESSION['return'][] = array(
+              'type' => 'danger',
+              'log' => array(__FUNCTION__, $_action, $_data_log),
+              'msg' => 'password_complexity'
+            );
+            continue;
+          }
+          if ($password != $password2) {
+            $_SESSION['return'][] = array(
+              'type' => 'danger',
+              'log' => array(__FUNCTION__, $_action, $_data_log),
+              'msg' => 'password_mismatch'
+            );
+            continue;
+          }
+          $password_hashed = hash_password($password);
+          $stmt = $pdo->prepare("UPDATE `admin` SET `username` = :username_new, `active` = :active, `password` = :password_hashed WHERE `username` = :username");
+          $stmt->execute(array(
+            ':password_hashed' => $password_hashed,
+            ':username_new' => $username_new,
+            ':username' => $username,
+            ':active' => $active
+          ));
+          if (isset($_data['disable_tfa'])) {
+            $stmt = $pdo->prepare("UPDATE `tfa` SET `active` = '0' WHERE `username` = :username");
+            $stmt->execute(array(':username' => $username));
+          }
+          else {
+            $stmt = $pdo->prepare("UPDATE `tfa` SET `username` = :username_new WHERE `username` = :username");
+            $stmt->execute(array(':username_new' => $username_new, ':username' => $username));
+          }
+        }
+        else {
+          $stmt = $pdo->prepare("UPDATE `admin` SET `username` = :username_new, `active` = :active WHERE `username` = :username");
+          $stmt->execute(array(
+            ':username_new' => $username_new,
+            ':username' => $username,
+            ':active' => $active
+          ));
+          if (isset($_data['disable_tfa'])) {
+            $stmt = $pdo->prepare("UPDATE `tfa` SET `active` = '0' WHERE `username` = :username");
+            $stmt->execute(array(':username' => $username));
+          }
+          else {
+            $stmt = $pdo->prepare("UPDATE `tfa` SET `username` = :username_new WHERE `username` = :username");
+            $stmt->execute(array(':username_new' => $username_new, ':username' => $username));
+          }
+        }
+        $_SESSION['return'][] = array(
+          'type' => 'success',
+          'log' => array(__FUNCTION__, $_action, $_data_log),
+          'msg' => array('admin_modified', htmlspecialchars($username))
+        );
+      }
+      return true;
+    break;
+    case 'delete':
+      $usernames = (array)$_data['username'];
+      foreach ($usernames as $username) {
+        if ($_SESSION['mailcow_cc_username'] == $username) {
+          $_SESSION['return'][] = array(
+            'type' => 'warning',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => 'cannot_delete_self'
+          );
+          continue;
+        }
+        if (empty(admin('details', $username))) {
+          $_SESSION['return'][] = array(
+            'type' => 'danger',
+            'log' => array(__FUNCTION__, $_action, $_data_log),
+            'msg' => array('username_invalid', $username)
+          );
+          continue;
+        }
+        $stmt = $pdo->prepare("DELETE FROM `admin` WHERE `username` = :username");
+        $stmt->execute(array(
+          ':username' => $username,
+        ));
+        $stmt = $pdo->prepare("DELETE FROM `domain_admins` WHERE `username` = :username");
+        $stmt->execute(array(
+          ':username' => $username,
+        ));
+        $stmt = $pdo->prepare("DELETE FROM `tfa` WHERE `username` = :username");
+        $stmt->execute(array(
+          ':username' => $username,
+        ));
+        $stmt = $pdo->prepare("DELETE FROM `fido2` WHERE `username` = :username");
+        $stmt->execute(array(
+          ':username' => $username,
+        ));
+        $_SESSION['return'][] = array(
+          'type' => 'success',
+          'log' => array(__FUNCTION__, $_action, $_data_log),
+          'msg' => array('admin_removed', htmlspecialchars($username))
+        );
+      }
+    break;
+    case 'get':
+      $admins = array();
+      $stmt = $pdo->query("SELECT `username` FROM `admin` WHERE `superadmin` = '1'");
+      $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+      while ($row = array_shift($rows)) {
+        $admins[] = $row['username'];
+      }
+      return $admins;
+    break;
+    case 'details':
+      $admindata = array();
+      $stmt = $pdo->prepare("SELECT
+        `tfa`.`active` AS `tfa_active`,
+        `admin`.`username`,
+        `admin`.`created`,
+        `admin`.`active` AS `active`
+          FROM `admin`
+          LEFT OUTER JOIN `tfa` ON `tfa`.`username`=`admin`.`username`
+            WHERE `admin`.`username`= :admin AND `superadmin` = '1'");
+      $stmt->execute(array(
+        ':admin' => $_data
+      ));
+      $row = $stmt->fetch(PDO::FETCH_ASSOC);
+      if (empty($row)) {
+        return false;
+      }
+      $admindata['username'] = $row['username'];
+      $admindata['tfa_active'] = (is_null($row['tfa_active'])) ? 0 : $row['tfa_active'];
+      $admindata['tfa_active_int'] = (is_null($row['tfa_active'])) ? 0 : $row['tfa_active'];
+      $admindata['active'] = $row['active'];
+      $admindata['active_int'] = $row['active'];
+      $admindata['created'] = $row['created'];
+      return $admindata;
+    break;
+  }
+}