SignProof is client approval and electronic signature software for agencies, freelancers, consultants, developers, and client-facing teams. It helps teams send deliverables for review, collect revision requests, preserve exact-version history, capture explicit client sign-off, and retain approval records. SignProof also includes a separate PDF signing workflow with recipients, signing fields, signed PDFs, and Signing Records. Paid plans add team collaboration, branded client portals, custom domains, analytics, invoices, and higher usage limits. The Business plan includes REST API access and signed outbound webhooks for developer workflows.
