his description gave me an idea. how about an app that turns any list of links into a subscription where you get emailed 1 per/x days. for example, you could

his description gave me an idea. how about an app that turns any list of links into a subscription where you get emailed 1 per/x days. for example, you could highlight some of MITs open courses, click a button and then get emailed a link every x days. I would find this highly useful as I'm the kind of person who never gets around to things. Does this already exist?