Digesto has improved! Here is the new set of features recently added.
Support for Author Preferences - One-to-One Personalization (Beta)
Digesto One-to-One Personalization has been updated with the ability to allow personalized content based on preferred Authors. This is in addition to the ability to personalize content based on preferred Categories, so you can now use Categories, Authors, or a combination of both dimensions to serve personalized content to your subscribers.