As of last week, we no longer offer SupremeWebMail as a webmail option. This webmail client was simply getting too old, costing too much time support & development-wise – at the end of the day our estimates showed that it would take us less time to re-write it than to update it to fit the way we’d like it to work.
And since we have an excellent webmail solution – namely RoundCube, our management team has decided that there is no need to develop a new webmail client for the moment.