diff --git a/Mail/mime.php b/Mail/mime.php
index 98b7aec..a1045a9 100644
--- a/Mail/mime.php
+++ b/Mail/mime.php
@@ -1531,7 +1531,7 @@ protected function setBody($type, $data, $isfile = false, $append = false)
         } else {
             $this->{$type} .= $data;
         }
-
+        $this->{$type} = wordwrap($this->{$type}, 998);
         return true;
     }