This tool has been very helpful in my work as i send emails daily to many clients and this makes it easy for me to save time on sending out all those emails. It can be used with any windows OS, and does not require any additional programs or hardware to run. I would say that its a good buy but if you have any problems with this one just contact their support team they will help you out and also give you free trial of the program so you can try before buying. I use this product when i send out emails to many clients.