The English file has a spelling error after you send a mail message. It's all over the code as well.
SENDT versus SENT. Sent. I have a corrected "english.php" file that goes in the language folder of the plug-in. I will see if I can't get it to the developers.
Outside that, this works as expected. Thanks!
The spelling error has been fixed in version 1.2 and it now supports Captcha and has spam-security.