WebSignup snippet not sending email

Using ModX 0.9.6 & PHP 4.4.2.

When I add a user on the back end, they’re sent the email that contains the username and password, but when someone registers via the WebSignup snippet on the site, the Web Signup email doesn’t get sent. The snippet is set up to report an error if mailing fails, but does not.

Any ideas about why this is? I’ve specified the email in the ModX back-end under Tools >> Configuration >> User.

Same error here, besides printing $_POST variables when i submit the websignup form show that $_POST is empty.

i m also facing the same problem while using Websignup snippet in my site