No, you basically only get access to item in the WP_User object and get_bloginfo() and these:
'%post_title%' => get_the_title($post_id),
'%post_type%' => get_post_type($post_id),
'%post_date%' => date(get_option('date_format'), strtotime(get_post($post_id)->post_date)),
'%post_excerpt%' => wp_trim_words(get_post($post_id)->post_content, $num_words = 55, $more = NULL),
'%permalink%' => get_permalink($post_id),
'%site_name%' => get_bloginfo('name'),
'%site_url%' => get_home_url(),
'%notification_label%' => $this->get_option('notification_label'),
'%notifications_label%' => $this->get_option('notifications_label'),
'%profile_url%' => admin_url('profile.php'),
'%user_ip%' => $_SERVER['REMOTE_ADDR']
