Publicize

Jetpack’s Publicize module works quite well with Custom Post Types, you just have to enable it in your theme or in the functions.php :

add_action(‘init’, ‘my_custom_init’);
function my_custom_init() {
     add_post_type_support( ‘your-custom-post-type-name’, ‘publicize’ );
}

You can also access it automatically once Jetpack is enabled in the Advanced Options tab under Edit Pods for your Custom Post Type, under Supports. Jetpack automatically adds ‘Jetpack Publicize Support’ when the plugin is activated.