added email helper
diff --git a/user_guide/toc.html b/user_guide/toc.html
index 3c6b827..465d8f4 100644
--- a/user_guide/toc.html
+++ b/user_guide/toc.html
@@ -158,6 +158,7 @@
 <li><a href="./helpers/date_helper.html">Date Helper</a></li>

 <li><a href="./helpers/directory_helper.html">Directory Helper</a></li>

 <li><a href="./helpers/download_helper.html">Download Helper</a></li>

+<li><a href="./helpers/email_helper.html">Email Helper</a></li>

 <li><a href="./helpers/file_helper.html">File Helper</a></li>

 <li><a href="./helpers/form_helper.html">Form Helper</a></li>

 <li><a href="./helpers/html_helper.html">HTML Helper</a></li>