WordPress Not Sending Activation Mail To Users

Hello,

I want users to register on my website, http://techzealand.com but when I tried a demo, I successfully registered there but as the popup shows that you will receive your passsword through mail, I have not received any mails from wordpress regarding registration.

I tried SMTP and Mandrill too but couldn’t find a solution

Help Me ..!!

https://wordpress.org/plugins/wordpress/