SendMail API 1.0
Pavel Říha 2022

You can use this API by including followng javaScript to your page:
        <scipt src="http://ccala.butbn.cas.cz/theme/ccala/sendmail.php?js&key=YOUR_API_KEY">
        <script>
           sendMail({from:"…", to:"…", subject:"…", message:"…"},
                    {success:function(re){…}, fail:function(re){…}, always:function(re){…}})
        </script>
        

Test the mailing engine