diff --git a/mailcow/src/mailcow-dockerized/data/web/sogo-auth.php b/mailcow/src/mailcow-dockerized/data/web/sogo-auth.php
new file mode 100644
index 0000000..08fb1b0
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/sogo-auth.php
@@ -0,0 +1,86 @@
+<?php
+
+$ALLOW_ADMIN_EMAIL_LOGIN = (preg_match(
+  "/^([yY][eE][sS]|[yY])+$/",
+  $_ENV["ALLOW_ADMIN_EMAIL_LOGIN"]
+));
+
+$session_var_user_allowed = 'sogo-sso-user-allowed';
+$session_var_pass = 'sogo-sso-pass';
+
+// prevent if feature is disabled
+if (!$ALLOW_ADMIN_EMAIL_LOGIN) {
+  header('HTTP/1.0 403 Forbidden');
+  echo "this feature is disabled";
+  exit;
+}
+// validate credentials for basic auth requests
+elseif (isset($_SERVER['PHP_AUTH_USER'])) {
+  // load prerequisites only when required
+  require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
+  $username = $_SERVER['PHP_AUTH_USER'];
+  $password = $_SERVER['PHP_AUTH_PW'];
+  $login_check = check_login($username, $password);
+  if ($login_check === 'user') {
+    header("X-User: $username");
+    header("X-Auth: Basic ".base64_encode("$username:$password"));
+    header("X-Auth-Type: Basic");
+    exit;
+  } else {
+    header('HTTP/1.0 401 Unauthorized');
+    echo 'Invalid login';
+    exit;
+  }
+}
+// check permissions and redirect for direct GET ?login=xy requests
+elseif (isset($_GET['login'])) {
+  // load prerequisites only when required
+  require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
+  // check permissions
+  if (isset($_SESSION['mailcow_cc_role']) && $_SESSION['acl']['login_as'] == "1") {
+    $login = html_entity_decode(rawurldecode($_GET["login"]));
+    if (filter_var($login, FILTER_VALIDATE_EMAIL)) {
+      if (!empty(mailbox('get', 'mailbox_details', $login))) {
+        // load master password
+        $sogo_sso_pass = file_get_contents("/etc/sogo-sso/sogo-sso.pass");
+        // register username and password in session
+        $_SESSION[$session_var_user_allowed][] = $login;
+        $_SESSION[$session_var_pass] = $sogo_sso_pass;
+        // redirect to sogo (sogo will get the correct credentials via nginx auth_request
+        header("Location: /SOGo/so/${login}");
+        exit;
+      }
+    }
+  }
+  header('HTTP/1.0 403 Forbidden');
+  exit;
+}
+// only check for admin-login on sogo GUI requests
+elseif (
+  strcasecmp(substr($_SERVER['HTTP_X_ORIGINAL_URI'], 0, 9), "/SOGo/so/") === 0
+) {
+  // this is an nginx auth_request call, we check for existing sogo-sso session variables
+  session_start();
+  // extract email address from "/SOGo/so/user@domain/xy"
+  $url_parts = explode("/", $_SERVER['HTTP_X_ORIGINAL_URI']);
+  $email = $url_parts[3];
+  // check if this email is in session allowed list
+  if (
+      !empty($email) &&
+      filter_var($email, FILTER_VALIDATE_EMAIL) &&
+      is_array($_SESSION[$session_var_user_allowed]) &&
+      in_array($email, $_SESSION[$session_var_user_allowed])
+  ) {
+    $username = $email;
+    $password = $_SESSION[$session_var_pass];
+    header("X-User: $username");
+    header("X-Auth: Basic ".base64_encode("$username:$password"));
+    header("X-Auth-Type: Basic");
+    exit;
+  }
+}
+
+// if username is empty, SOGo will use the normal login methods / login form
+header("X-User: ");
+header("X-Auth: ");
+header("X-Auth-Type: ");