Pop\Mail\Mail::setText PHP Method

    public function setText($text)
    {
        $this->message->setText($text);
        return $this;
    }

 /**
  * Send install notification email to user
  *
  * @param  \Phire\Form\User $form
  * @return void
  */
 public static function send(\Phire\Form\User $form)
 {
     $i18n = Table\Config::getI18n();
     // Get the domain
     $domain = str_replace('www.', '', $_SERVER['HTTP_HOST']);
     // Set the recipient
     $rcpt = array('name' => $form->username, 'email' => $form->email1, 'url' => 'http://' . $_SERVER['HTTP_HOST'] . BASE_PATH, 'login' => 'http://' . $_SERVER['HTTP_HOST'] . BASE_PATH . APP_URI, 'domain' => $domain);
     $config = \Phire\Table\Config::findById('system_email');
     $config->value = $form->email1;
     $config->update();
     $config = \Phire\Table\Config::findById('reply_email');
     $config->value = 'noreply@' . $domain;
     $config->update();
     if (file_exists($_SERVER['DOCUMENT_ROOT'] . BASE_PATH . CONTENT_PATH . '/extensions/themes/phire/mail')) {
         $mailTmpl = file_get_contents($_SERVER['DOCUMENT_ROOT'] . BASE_PATH . CONTENT_PATH . '/extensions/themes/phire/mail/install.txt');
     } else {
         $mailTmpl = file_get_contents(__DIR__ . '/../../../view/phire/mail/install.txt');
     }
     $mailTmpl = str_replace(array('Dear', 'Thank you for installing Phire CMS for', 'The website will be viewable here:', 'To manage the website, you can login to Phire here:', 'Thank You'), array($i18n->__('Dear'), $i18n->__('Thank you for installing Phire CMS for'), $i18n->__('The website will be viewable here:'), $i18n->__('To manage the website, you can login to Phire here:'), $i18n->__('Thank You')), $mailTmpl);
     // Send email verification
     $mail = new Mail($domain . ' - ' . $i18n->__('Phire CMS Installation'), $rcpt);
     $mail->from('noreply@' . $domain);
     $mail->setText($mailTmpl);
     $mail->send();
 }