I like that it allows me to send out emails as often or infrequently as needed, without having to worry about my email provider's spam filters. It seems more expensive than other options but their customer service is top-notch. Sometimes there are issues with sending when we want them too which can be frustrating if you're trying to get your schedule up and running quickly. We've been using this tool for over 3 years now and haven't had any major problems. If you need an easy way to manage multiple campaigns then this is perfect! Sending out newsletters and event invitations to our customers.