Helpmonks is the perfect concept (charge for a support desk on a per mailbox basis and not a per agent basis). Like HelpScout and Freshdesk, Helpmonks is oriented towards seamless support via email. For us, Helpmonks is just short of the polish necessary to allow us to move from Teamwork Desk. We're watching Helpmonks closely though. Helpmonks is the most affordable quality email support help desk option on the market.