diff --git a/src/applications/metamta/adapter/PhabricatorMailImplementationPHPMailerAdapter.php b/src/applications/metamta/adapter/PhabricatorMailImplementationPHPMailerAdapter.php
index d9609b1a7b..8f7e809d6c 100644
--- a/src/applications/metamta/adapter/PhabricatorMailImplementationPHPMailerAdapter.php
+++ b/src/applications/metamta/adapter/PhabricatorMailImplementationPHPMailerAdapter.php
@@ -1,121 +1,123 @@
 <?php
 
 final class PhabricatorMailImplementationPHPMailerAdapter
   extends PhabricatorMailImplementationAdapter {
 
+  private $mailer;
+
   /**
    * @phutil-external-symbol class PHPMailer
    */
   public function __construct() {
     $root = phutil_get_library_root('phabricator');
     $root = dirname($root);
     require_once $root.'/externals/phpmailer/class.phpmailer.php';
     $this->mailer = new PHPMailer($use_exceptions = true);
     $this->mailer->CharSet = 'utf-8';
 
     $encoding = PhabricatorEnv::getEnvConfig('phpmailer.smtp-encoding', '8bit');
     $this->mailer->Encoding = $encoding;
 
     // By default, PHPMailer sends one mail per recipient. We handle
     // multiplexing higher in the stack, so tell it to send mail exactly
     // like we ask.
     $this->mailer->SingleTo = false;
 
     $mailer = PhabricatorEnv::getEnvConfig('phpmailer.mailer');
     if ($mailer == 'smtp') {
       $this->mailer->IsSMTP();
       $this->mailer->Host = PhabricatorEnv::getEnvConfig('phpmailer.smtp-host');
       $this->mailer->Port = PhabricatorEnv::getEnvConfig('phpmailer.smtp-port');
       $user = PhabricatorEnv::getEnvConfig('phpmailer.smtp-user');
       if ($user) {
         $this->mailer->SMTPAuth = true;
         $this->mailer->Username = $user;
         $this->mailer->Password =
           PhabricatorEnv::getEnvConfig('phpmailer.smtp-password');
       }
 
       $protocol = PhabricatorEnv::getEnvConfig('phpmailer.smtp-protocol');
       if ($protocol) {
         $protocol = phutil_utf8_strtolower($protocol);
         $this->mailer->SMTPSecure = $protocol;
       }
     } else if ($mailer == 'sendmail') {
       $this->mailer->IsSendmail();
     } else {
       // Do nothing, by default PHPMailer send message using PHP mail()
       // function.
     }
   }
 
   public function supportsMessageIDHeader() {
     return true;
   }
 
   public function setFrom($email, $name = '') {
     $this->mailer->SetFrom($email, $name, $crazy_side_effects = false);
     return $this;
   }
 
   public function addReplyTo($email, $name = '') {
     $this->mailer->AddReplyTo($email, $name);
     return $this;
   }
 
   public function addTos(array $emails) {
     foreach ($emails as $email) {
       $this->mailer->AddAddress($email);
     }
     return $this;
   }
 
   public function addCCs(array $emails) {
     foreach ($emails as $email) {
       $this->mailer->AddCC($email);
     }
     return $this;
   }
 
   public function addAttachment($data, $filename, $mimetype) {
     $this->mailer->AddStringAttachment(
       $data,
       $filename,
       'base64',
       $mimetype);
     return $this;
   }
 
   public function addHeader($header_name, $header_value) {
     if (strtolower($header_name) == 'message-id') {
       $this->mailer->MessageID = $header_value;
     } else {
       $this->mailer->AddCustomHeader($header_name.': '.$header_value);
     }
     return $this;
   }
 
   public function setBody($body) {
     $this->mailer->IsHTML(false);
     $this->mailer->Body = $body;
     return $this;
   }
 
   public function setHTMLBody($html_body) {
     $this->mailer->IsHTML(true);
     $this->mailer->Body = $html_body;
     return $this;
   }
 
   public function setSubject($subject) {
     $this->mailer->Subject = $subject;
     return $this;
   }
 
   public function hasValidRecipients() {
     return true;
   }
 
   public function send() {
     return $this->mailer->Send();
   }
 
 }