diff --git a/externals/mimemailparser/MimeMailParser.class.php b/externals/mimemailparser/MimeMailParser.class.php
--- a/externals/mimemailparser/MimeMailParser.class.php
+++ b/externals/mimemailparser/MimeMailParser.class.php
@@ -2,6 +2,7 @@
 
 require_once('attachment.class.php');
 
+#[\AllowDynamicProperties]
 /**
  * Fast Mime Mail parser Class using PHP's MailParse Extension
  * @author gabe@fijiwebdesign.com