It offers a two week trial which is more than enough to judge if an email service for $100/year is worth the trouble.
Warning: This will be very boring for most. My personal email setup is a dull matter. It might however be useful for some as it solved some problems for me.
I also include a mini review of Basecamp's HEY mail service. It wasn't for me in it's whole but it made me think how I use email and triggered a change. This is powerful and I recommend you try it for your self.