We are looking at developing a site with a newsletter that automatically and periodically serves content to the subscribers.
Typical scenario: As a subscriber, I go to my profile page, choose a series of topics (some categories/taxonomy terms) and a frequency. As a result, a digest of the corresponding articles is sent to me at the frequency I chose.
Does the e-newsletter have approaching features, or at least possibilities of extension? If not, would you be interested in developing such a feature?