We just launched better email notifications for articles you follow, and expiring articles.
You don't need to do anything – it's automatically set (in your Knowledge Base Settings) to email you 7 days before an article (you follow) expires.
You'll now be getting emails:
* 7 days (configurable) before article is about to expire
* Every week with a digest of what's changed/added to articles/authors you follow
(Example emails below)