Your deal looks really good. I never have been my own email server so I have one question. It says you can move between appsumo tiers up & down. Is there a time limit to this? (heres why I ask...I know nothing about this but I am interested in setting it up and doing it. But if the learning curve is steep, I may put it on a back burner for more pressing issues. After eventually getting it setup and functioning smoothly I am sure I will want to upgrade to teir 3)