FIX: fix email replies for ms outlook

lib/email/receiver.rb

@@ -114,7 +114,8 @@ module Email
         html = fix_charset message.html_part
         text = fix_charset message.text_part
         # TODO picking text if available may be better
-        if text && !html
+        # in case of email reply from MS Outlook client, prefer text
+        if (text && !html) || (text && message.header.to_s =~ /X-MS-Has-Attach/)
           return text
         end
       elsif message.content_type =~ /text\/html/