diff --git a/index.php b/index.php
index a6a6eb6..b6f7dcd 100644
--- a/index.php
+++ b/index.php
@@ -12,16 +12,27 @@
 </head>
 <body>
     <h1>Email Obfuscator</h1>
+
+    <?php
+    $email = 'some_contact-emai.l@sample.com';
+    ?>
+
     <?php
-    $email1 = EmailObfuscator::obfuscate('contact@sample.com');
+    $email1 = EmailObfuscator::obfuscate($email);
     ?>
     <p>This is obfuscated email: <?php echo $email1; ?></p>
     <pre><?php echo htmlentities($email1); ?></pre>
     <hr>
     <?php
-    $email2 = obfuscate_email('contact@sample.com', 'Contact us', ['class' => 'some-class', 'id' => 'some-id', 'noscript' => 'Custom noscript contents']);
+    $email2 = obfuscate_email($email, 'Contact us', ['class' => 'some-class', 'id' => 'some-id', 'noscript' => 'Custom noscript contents']);
     ?>
     <p>This is obfuscated email: <?php echo $email2; ?></p>
     <pre><?php echo htmlentities($email2); ?></pre>
+    <hr>
+    <?php
+    $email3 = obfuscate_email($email, null, ['mailto' => false]);
+    ?>
+    <p>This is obfuscated email: <?php echo $email3; ?></p>
+    <pre><?php echo htmlentities($email3); ?></pre>
 </body>
 </html>
diff --git a/src/EmailObfuscator.php b/src/EmailObfuscator.php
index f509b9c..b658a64 100644
--- a/src/EmailObfuscator.php
+++ b/src/EmailObfuscator.php
@@ -19,11 +19,12 @@ public static function obfuscate($email, $text = null, $options = [])
     {
         $defaults = [
             'noscript' => 'Enable JavaScript to see this email address',
+            'mailto' => true,
         ];
         $options = array_merge($defaults, $options);
         $email = strtolower($email);
         $coded = '';
-        $unmixedkey = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.@-';
+        $unmixedkey = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.@-_+%';
         $inprogresskey = $unmixedkey;
         $mixedkey = '';
         $unshuffled = strlen($unmixedkey);
@@ -62,6 +63,7 @@ public static function obfuscate($email, $text = null, $options = [])
             }
             $attrs .= " {$k}=\"{$v}\"";
         }
+        $mailto = $options['mailto'] ? 'true' : 'false';
         $javascript = <<<JAVASCRIPT
 <script type="text/javascript" language="javascript">
 <!--
@@ -83,7 +85,11 @@ public static function obfuscate($email, $text = null, $options = [])
         }
     }
     {$text};
-    document.write('<a href="mailto:' + {$vars['link']} + '"{$attrs}>' + {$vars['text']} + '</a>');
+    var mailto = {$mailto};
+    var start = mailto ? '<a href="mailto:' + {$vars['link']} + '"{$attrs}>' : '';
+    var text = {$vars['text']};
+    var end = mailto ? '</a>' : '';
+    document.write(start + text + end);
 })();
 //-->
 </script><noscript>{$options['noscript']}</noscript>
