Easy to use, it's free, the customer service is very quick and responsive. I can see why Smartmailer is used by so many companies. It's just great. I would like to see a few more features added, but Smartmailer is a great product. We are using it to send newsletters to our customers. It's a great way to keep in touch with them. It's easy to use, it's free, it's very easy to set up and it's very easy to use. I'm able to send out newsletters to our customers. The best thing about Smartmailer is that it's free.