We have recently introduced package customization for customers willing to pay a small setup fee. Customers may ask for variations within the given package Please visit http://www.jodohost.com/customize.htm.
And yes, we do allow our customers to trade available mail boxes for additional space in other email accounts.
Ok. Suppose you are taking the Basic package (windows or linux) you get 20 email accounts with each account having 2MB. This gives you a total of 40MB in mail space. You can redistribute this 40MB into say 8 email accounts with 5MB in them each.