Jetpack by Automattic is a plugin offering extra features from WordPress.com to be used on self-hosted WordPress sites and blogs. The Publicize module is an efficient tool to share new posts to social media accounts (Facebook, Twitter, LinkedIn, Tumblr, Google+, & Path) with a single click of a button without having to log in to each platform separately.

Custom Post Type Support

Out of the box, Jetpack is native to Posts; however, you can easily extend the functionality to custom post types by adding ‘publicize’ to the support array in functions.php, if you registered the CPT manually.

If you’re using the Custom Post Type UI plugin, add ‘publicize’ to Custom “Supports”.

Hope this helps!