Dm\Request\V20151123\SingleSendMailRequest::setTagName PHP Method

    public function setTagName($tagName)
    {
        $this->tagName = $tagName;
        $this->queryParameters["TagName"] = $tagName;
    }

 /**
  * Send mail
  * @param Mail $mail
  * @return bool true if the mail was successfully accepted for delivery, false otherwise.
  */
 public function send(Mail $mail)
 {
     $iClientProfile = DefaultProfile::getProfile($this->config['region'], $this->config['accessKey'], $this->config['accessSecret']);
     $client = new DefaultAcsClient($iClientProfile);
     $request = new Dm\SingleSendMailRequest();
     $request->setAccountName($this->config['accountName']);
     $request->setFromAlias($this->config['alias']);
     $request->setAddressType(1);
     $request->setTagName($this->config['tagName']);
     $request->setReplyToAddress("true");
     $request->setToAddress($mail->to);
     $request->setSubject($mail->subject);
     $request->setHtmlBody($mail->content);
     $response = $client->getAcsResponse($request);
     return true;
 }