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Sign in Minutes, Not Days
Send, sign and deliver documents with an audit trail that cannot be edited.
Overview
What QSignature does.
QSignature is Quadrant's enterprise e-signature platform. Teams send documents, collect signatures and deliver the signed result — with every view, signature, decline and download recorded in an audit trail that cannot be edited.
It is built for businesses that need e-signature inside their own processes: HMAC-signed webhooks and revocable API keys for integration, per-tenant data isolation, branding and multi-currency billing.
Contracts, NDAs, offer letters, lease agreements and approvals move from upload to signed copy without printing, scanning or chasing email threads — and every signed file carries a fingerprint that proves it has not changed since.
- 14-day free trial, no credit card
- Priced per workspace, not per seat
- Full audit trail and API on every plan
Features
What comes in the box.
Tamper-evident audit trail
Every view, signature, decline and download logged with timestamp, IP and user agent.
Schema-per-tenant isolation
Each tenant's envelopes, recipients and signatures live in their own database schema.
Webhooks and API keys
HMAC-signed webhooks and revocable API keys for service-to-service integration.
Templates and bulk send
Reusable templates, multi-document envelopes and bulk sending with per-recipient merge values.
Multi-document envelopes
Bundle several documents into one guided signing flow, downloadable as a ZIP.
Branding and multilingual UI
Per-tenant logo, brand colour and email footer, with a language picker for signers.
Per-tenant currency
Plans, invoices and quotas billed in INR, ZAR or USD.
Configurable plan limits
Admin-set caps on file size, envelope size, files, recipients and storage.
How it works
From first step to live with QSignature.
Upload
Add one or more PDFs, or start from a saved template.
Prepare
Place signature, date and text fields and set who signs, in what order.
Send
Recipients get a branded email and sign in the browser — no account needed.
Deliver
Everyone receives the signed copy; the audit trail and fingerprint are stored with it.
Why QSignature
What changes for your team.
Contracts close faster
Signatures arrive in minutes from any device instead of days of print, scan and courier.
Evidence you can show
An uneditable audit trail and a SHA-256 fingerprint on every signed file.
Fits your own systems
Trigger envelopes from your apps and react to signing events through webhooks.
Predictable cost
Priced per workspace, so adding colleagues does not add seats to the bill.
Built for
- Real estate
- Legal & NDAs
- IT & SaaS
- Education
- Media & entertainment
- HR & recruitment
- Finance & BFSI
- Government & public sector
Security & compliance
- Files encrypted at rest with AES-256
- SHA-256 fingerprint on every signed file
- Audit log that cannot be edited
- Role-based access, network-restricted sign-in and two-step login
- Aadhaar-friendly signer flows and IT Act 2000 §5 alignment
- Data residency controls
Connects through
- REST API
- Revocable API keys
- HMAC-signed webhooks
- Bulk send with merge values
- ZIP download of signed sets
FAQs
QSignature, answered.
No. Recipients open the email link and sign in the browser on any device. Only the people sending documents need a workspace.
Files are encrypted at rest with AES-256, every signed file gets a SHA-256 fingerprint, and every view, signature, decline and download is written to an audit log that cannot be edited.
Yes. Create envelopes with the API using revocable API keys, and receive HMAC-signed webhooks when documents are viewed, signed or declined.
Per workspace, not per seat, with the full audit trail and API on every plan. A 14-day free trial needs no credit card.
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See QSignature in action.
Tell us about your team and what you need, and we will set up a walkthrough with the people who build it.