Postmaster hook for member activation notification - ExpressionEngine

Member_register_validate_members.phtml

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

// Put this file in /third_party/postmaster/hooks/
// We are using 'member_register_validate_members' hook
// https://ellislab.com/expressionengine/user-guide/development/extension_hooks/module/member_register/#member-register-validate-members

class Member_register_validate_members_postmaster_hook extends Base_hook {
	
	protected $title = 'Member Register Validate Members';
	
	public function __construct()
	{
		parent::__construct();
	}
	
	public function trigger($member_id)
	{
		$member = $this->channel_data->get_member($member_id);

		parent::send($member->row_array());
	}
}

Postmaster hook template variables.phtml

// There are probably all member fields available, I'm using just these
{hook:member_id}
{hook:screen_name}
{hook:email}