if (mysqli_num_rows($result_verify_email) == 0) { // IF no previous user is   using this email .
        // Create a unique  activation code:
        $activation = md5(uniqid(rand(), true));
        $query_insert_user = "INSERT INTO `members` ( `Username`, `Email`, `Password`, `Activation`) VALUES ( '$name', '$Email', '$Password', '$activation')";
        $result_insert_user = mysqli_query($dbc, $query_insert_user);
        if (!$result_insert_user) {
            echo 'Query Failed ';
        }
        if (mysqli_affected_rows($dbc) == 1) { //If the Insert Query was successfull.
            // Send the email:
            $message = " To activate your account, please click on this link:\n\n";
            $message .= WEBSITE_URL . '/activate.php?email=' . urlencode($Email) . "&key=".$activation;
            mail($Email, 'Registration Confirmation', $message, 'From: ismaakeel@gmail.com');
            // Flush the buffered output.
            // Finish the page:
            echo '<div class="success">Thank you for
registering! A confirmation email
has been sent to '.$Email.' Please click on the Activation Link to Activate     your account </div>';
        } else { // If it did not run OK.
            echo '<div class="errormsgbox">You could not be registered due         to a system
error. We apologize for any
inconvenience.</div>';
        }
    } else { // The email address is not available.
        echo '<div class="errormsgbox" >That email
address has already been registered.
</div>';
    }
This is a sample of my code. I use a simple mail() to send an email, but it is not working. Can anybody point out any mistake? I am not getting error messages, but when I send an email, it is not working. I am not receiving the email! Please help!
 
    