fixed bug where html in plaintext emails are interpreted as html.

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/).
 - fix: restore focus on reload
 - Added $config['prefer_plaintext'] = true; Prefer HTML or Text and removed toggle buttons. 
 - #33 improve button style
+- fixed bug where html in plaintext emails are interpreted as html. 
 
 ### Added 
 - Added multiple domain support (https://github.com/synox/disposable-mailbox/issues/21)

src/frontend.template.php

@@ -221,7 +221,7 @@ $purifier = new HTMLPurifier($purifier_config);
                                 <?php
                                 $safeHtml = $purifier->purify($email->textHtml);
 
-                                $safeText = $purifier->purify($email->textPlain);
+                                $safeText = htmlspecialchars($email->textPlain);
                                 $safeText = nl2br($safeText);
                                 $safeText = \AutoLinkExtension::auto_link_text($safeText);