Bulk mailing list upload facility provided?
I expect any mailing system with the kind of functionality described on your website to have a bulk mailing list upload/download facility provided to upload a .csv file or similar.
I have just purchased the system and will probably ask for a refund if I find that I have to play around with mySQL data imports/exports separately from the system.
More info please before I spend too much time getting this to work. If there is no bulk upload/export facility then when do you plan to have one available.