How can an author be subscribed to the posts of another author and receive notifications of the new posts?

What I’m trying to achieve is to implement a function that will enable an author, when registered and browsing the front-end, to have the option of following other authors of the site and receiving notifications via a front end message when the followed authors post. Is this something that can be achieved with WordPress?

I am using the WP Subscribe Author plugin which does the job.

I did some tweaking to the email that is sent in the PHP file as the default email didn’t include a link to the post.