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.

4sign supports secure digital signing across browser, mobile, Microsoft Teams and SharePoint. Your team can prepare, send and track agreements wherever they work, and signers can sign on any device, including through the 4sign app on the App Store and Google Play.

Security and regional compliance are built in. Every agreement is protected by end-to-end encryption, multi-factor authentication, a tamper-proof audit trail and a digital certificate seal. Your data is hosted in South Africa on Azure, which supports POPIA-compliant data residency, and 4sign digital signatures are recognised under the Electronic Communications and Transactions Act, 2002 (ECT Act) for most business agreements.

Licensing is simple. Start with a free trial that includes five flows. Then choose Pay-as-you-go or Enterprise, both priced per flow, with no per-user licences. Enterprise adds REST API access, custom branding and white-labelling, and private tenant deployment. Explore more