I'm looking for an auto-responder for if someone leaves a comment on our blog. Potential customers are posting sales enquiries there and I want to be able to automate an email to them telling them how to contact our sales team direct with their query. Someone mentioned they used to use Ajaxed WordPress but I see it is no longer supported. If I can't get an auto-responder then a pop-up after they have left the comment is another option. I've tried searching for auto responders but they seem to all be more to do with newsletter subscribers go getting a bit confused which is best. Thanks for your help.