We have found HappyFox ( http://www.happyfox.com) to be very useful for managing client requests. The tool integrates with our email and website, creates tickets based on customer requests. HappyFox allows us to categorize and search for tickets, making bulk mail handling very simple. It also enables us set milestones for tracking the progress of each ticket with the status feature of each ticket. We have also added staff members with different administrative privileges in our support instance. HappyFox is free for a 2 member team and economically priced for larger teams
