Pretty neat, maybe you could consider a programmatic CLI API to add and remove domains.
Check out hose for an approximation of what I mean
https://github.com/bevacqua/hose
Thanks! Will keep the idea in mind, and I like the way you are handling this in hose.
The first thing I'm going to add is a way to pass domains as parameters, to allow users to quickly check one or several domains without having to touch the config file at all.