4Sign by 4sight AI is a fast, simple, and affordable electronic signature platform built natively for the AI era. Designed to eliminate traditional, slow paperwork bottlenecks like printing and scanning , 4sign streamlines the contract lifecycle into four basic steps: uploading files from formats like Microsoft Word, adding signers, sending out cross-device invitations, and automatically leveraging AI to extract and sync data to company systems. The tool features comprehensive AI capabilities including contract review, obligation tracking, and native Model Context Protocol (MCP) server support, accommodating both proprietary and custom AI models.

To optimize workflow efficiency, 4Sign embeds seamlessly into Microsoft 365, enabling users to manage signature requests directly inside Teams, Outlook, and Word. Security and regional compliance are core focuses ; the platform features end-to-end encryption, multi-factor authentication, a tamper-proof audit trail, and digital certificate seals. Critically for South African businesses, data is hosted locally on Azure for POPIA-compliant residency, and agreements are legally equivalent to ink signatures under the ECT Act 2002. Flexible licensing includes a zero-cost 5-flow free trial, alongside Pay-as-you-go and Enterprise tiers fixed at R20 per flow, offering advanced features like REST API access, custom white-labeling, and private tenant deployments.