A few key things that i really enjoyed about Mail: The drag and drop builder is great for when you want to get an email quickly and don't have the time to code from scratch and from what i remember was easier to use over mailchimp. The AWS integration make large email lists so much more affordable. The pricing is competitive and is definitely up there on the list in regards to bang for buck

Ease of use. The aim for myself and our company was to have a very simple to use and easy to understand mass email system. We are new to using the method of promotion and can recommend this for those making a start, yet wanting to maintain a professional impression.

The template editor and campaigns, The preview model for mobile and web