Clean code

Other then the one bit I found, which I am sure they will have fixed soon, it was very clean and easy to modify. I appreciate very much them defining the user meta key once which made it so I could allow for each sub site to have their own settings in regards to mass messaging and such. So a user could have one setting for one site, and a different one for another. It made my life easier and I am still modifying at the moment, but overall, a very nice plugin. Recommend it ??