ZapSign review
E-signatures with WhatsApp authentication, identity checks, and a free plan.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
ZapSign is an electronic-signature service for individuals, small businesses, teams, and enterprises. Users can create documents from files or reusable templates, send them by email, WhatsApp, or link, and track signing activity. Its range spans straightforward signature collection and more involved identity checks, bulk signing, and digital certificate signing. That makes it relevant to teams that want WhatsApp in their signing flow or need several authentication options without giving up document organization and audit records.
Authentication and workflow depth are central strengths. Signers can receive one-time passwords by email, SMS, or WhatsApp, and the product also supports selfie and ID checks, facial biometrics, and digital certificates. Configurable signing order, signer activity history, timestamps, folders, permissions, and search address different stages of document handling. Reusable templates and forms can help repeatable processes, while bulk signing suits higher-volume work. ZapSign also offers a REST API and webhooks, and lists connections including Google Drive, OneDrive, Dropbox, HubSpot, Salesforce, Zapier, Make, and N8N. Some integrations are through automation services.
The free plan includes an Individual option with one user, three documents per month, and a real-time audit record. Professional plans include ten users and quotas ranging from 20 to 80 documents per month, with an unlimited-document option; the 20-document tier highlights selfie and ID authentication. Team options include 30 users, and the listed 20-document Team plan includes API and native integrations. Plan pricing varies by quota and billing period, so buyers should compare the applicable plan terms. ZapSign is a fit for teams prioritizing WhatsApp signing, authentication choices, and API connectivity; organizations requiring a desktop or mobile app platform beyond web and API should look elsewhere.
ZapSign pros and cons
- Where it wins
- Send documents by email, WhatsApp, or link with configurable signing order
- Use selfie and ID authentication, facial biometrics, or digital certificates
- Connect workflows through integrations, REST API, and webhooks
- Where it doesn't
- Platform coverage is limited to web and API
- Document limits vary by plan, with only unlimited documents on one Professional tier
- Some integrations rely on third-party automation services
ZapSign fact sheet, pricing and score →
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