Peepso Welcome plugin

I require the following code to be adjusted to work with peepso and made into a plugin. The plugin is to send a message and an email to any newly registered members on a peepso run website. In addition an area in the back end so admins can adjust the message that is sent out. //send msg to new user function send_msg_to_new_member( $user_id, $key, $user ) { $args = array( 'sender_id' => 1, 'thread_id' => false, 'recipients' => array( $user_id ), 'subject' => 'Welcome to the site', 'content' => 'Content of msg goes here', 'date_sent' => bp_core_current_time() ); $result = messages_new_message( $args ); } add_action( 'bp_core_activated_user', 'send_msg_to_new_member', 3 ); ?>