I like how easy hash root makes things for me! They have great customer care team who answer questions very quickly/efficiently & understand your needs when they help with any problem (if there was one). No real dislike about their product itself but some features could be improved upon such as being able to add more than 1 email address or having an option where people can choose whether certain emails will go through mailman vs just spam folder etc.. So far so good though no major complaints here at all - simple tool if anyone wants something quick n dirty without too much hassle from set up / configuration side :) We're using them primarily because our website gets lots traffic daily hence needing scalable solution wich also has fast response time otherwise visitors would leave us frustrated waiting forever before seeing content even after signingup via referral link provided by friends :D.