include email address we couldn't send email to when logging send errors. closes #1069

lib/email.js

@@ -64,9 +64,8 @@ function doSend(landing_page, email, site, secret, langContext) {
       subject: subject,
       body: template({ link: url, site: site, gettext: _, format: format })
     }, function(err, success){
-      if(!success) {
-        logger.error("error sending email: " + err);
-        logger.error("verification URL: " + url);
+      if (!success) {
+        logger.error("error sending email to: " + email + " - " + err);
       }
     });
   };