The fact that it's very easy to use, makes it possible for me as an administrator in my organization to manage all our communications with customers without any trouble at all.
It has many options, but I would like if you could add more features by adding new templates or even making some changes on existing ones. If your looking into creating a system that can handle multiple emails at once (such as newsletters), this is definitely one worth considering! We have been able to create several different types of e-mails such as newsletter, customer notifications, etc.