* code for task#1052.

module/mail/control.php

@@ -76,6 +76,7 @@ class mail extends control
         $this->view->position[] = html::a(inlink('index'), $this->lang->mail->common);
         $this->view->position[] = $this->lang->mail->edit;
 
+        $this->view->mailExist   = $this->dao->select('email')->from(TABLE_USER)->where('email')->ne('')->fetch();
         $this->view->mailConfig  = $mailConfig;
         $this->display();
     }

module/mail/view/edit.html.php

@@ -59,7 +59,7 @@ include '../../common/view/header.html.php';
      <td colspan='2' class='a-center'>
        <?php 
        echo html::submitButton();
-       if($this->config->mail->turnon) echo html::linkButton($lang->mail->test, inlink('test'));
+       if($this->config->mail->turnon and $mailExist) echo html::linkButton($lang->mail->test, inlink('test'));
        ?>
      </td>
    </tr>