I was one of the early Mimestream beta users--all 167,000 of us! Over my daily use of their beta for 2.5 years as my only Mac email client, I saw them build a very nice Gmail client. However, when I learned of their new pricing last month, I deinstalled the product and I now use Apple Mail. Apple Mail is just as good as Mimestream. And it's hard to say no to "free"! The Mimestream developers are going to realize that nobody is going subscribe to a $50 a year email client that is so closely comparable to Apple Mail. But also, shame on them for blowing their pricing plans and alienating 167,000 beta users!
I wish Mimestream luck in their journey....they are going to need it.