Hosting email management problem for WordPress

Hi There!
Dear Viewers! I completed making a new WordPress site recently. I created it for networking and heavy communicating with others. But I cannot do that for one reason.

When a new user fills up registration forms of WordPress then they wait for their confirmation email. But no confirmation mail are coming from WordPress or hosting to their mailbox.

I use byethost.com free hosting package.
Please help me, what can solve this problem?
