Onboard and engage your users with Userlist, a customer messaging tool for SaaS companies. More efficient than building it yourself; less complex than Intercom or Customer.io. Laser-Focused on Your SaaS Needs. Unlike other customer messaging tools, Userlist was built specifically for nurturing SaaS users after they pay or start their trial. Manage user profiles in a simple admin dashboard. Filter users based on their properties and events.