I am not sure how much I want to bother clients by rating my responses. It's a faff, and provides no real reward for them. There's too much junk at the bottom of emails anyway. I'd also not want to apply it to all emails - and there's a fuzzy line (where I work) between clients, providers, and random other contacts.

Having said that, I do love it when someone responds with a "Thank You". Or, in the case of one memorable client, poems praising how quickly the problem has been solved. <3 those.

$20 a month seems steep for something so simple. It's a good idea, although I'm not sure as a customer if I'd want to take the trouble to rate a reply.

For $20 a month you could sign up with an integrated feedback system which, if nicereply gains any traction, would soon integrate a similar feature anyway.