Send activation link to user after registration in WordPress

Question

I am using custom user registration and log in in WordPress. Now I want to send a mail containing activation link to the registered user so that they can complete their registration after clicking that link.

Solution

You can do it something like by adding this code in fucntions.php your send_activation_link() functon in add_action ( 'user_register', 'send_activation_link');

user_register is a hook, which runs at the end of user creation

function send_activation_link(){
$hash = md5( $random_number );
add_user_meta( $user_id, 'hash', $hash );
$user_info = get_userdata($user_id);
$to = $user_info->user_email;           
$subject = 'Member Verification'; 
$message = 'Hello,';
$message .= "\n\n";
$message .= 'Welcome...';
$message .= "\n\n";
$message .= 'Username: '.$un;
$message .= "\n";
$message .= 'Password: '.$pw;
$message .= "\n\n";
$message .= 'Please click this link to activate your account:';
$message .= home_url('/').'activate?id='.$un.'&key='.$hash;
$headers = 'From: [email protected]' . "\r\n";           
wp_mail($to, $subject, $message, $headers); 
}

Its not a complete answer but just to give an idea to work something like this