✦
Introducing DocuNinja
Sign with confidence.
Invoice with clarity.
e-Signing & Document Management — by Invoice Ninja
DocuNinja connects document signing directly to invoicing — so the moment a contract is signed, your next step is crystal clear.
- Legally binding
- SOC 2 & HIPAA
- No per-envelope fees
- Native Invoice Ninja integration
12
All signed
📄 Service_Agreement_AcmeCorp.pdf
✓ All signed
Client Signature
J. Robertson
Date
Apr 12, 2026
JR
Jamie Robertson
Client · Signer
✓ Signed
YO
You (Owner)
Sender · Approver
✓ Signed
SL
Sarah Liu
CC · Viewer
👁 Viewed
🧾
Document signed — invoice created
Just now · via DocuNinja + Invoice Ninja
Built into Invoice Ninja. Available standalone.
Whether you already use Invoice Ninja or need a best-in-class e-signing tool on its own, DocuNinja works for you.
DocuNinja inside Invoice Ninja
Already on Invoice Ninja Enterprise? DocuNinja is built right in. Sign a contract, then convert it to a paid invoice — all without switching tools. The only e-signing platform that also invoices your client.
- Send documents for signing from within Invoice Ninja
- Signed contracts automatically attach to client invoices
- Lock document delivery until payment is received
- Clients sign and pay in one branded portal
- Single login, single dashboard, zero friction
DocuNinja as your e-signing platform
Don't use Invoice Ninja yet? DocuNinja works as a full-featured standalone e-signature and document management platform — competitive with DocuSign and PandaDoc at a fraction of the cost.
- Unlimited documents — no per-envelope fees, ever
- Upload any PDF or Word document
- Multi-party signing with roles & permissions
- Full audit trail & legally binding signatures
- Optionally connect Invoice Ninja invoicing later
Everything you need to sign, send & manage documents
From upload to signature to filed — DocuNinja handles the entire document workflow.
Legally Binding e-Signatures
ESIGN Act (US) and eIDAS (EU) compliant. Every signature is timestamped, encrypted, and legally enforceable.
Document Analytics
See exactly when each recipient opens, reads, and views your document in real time. Know when to follow up.
Real-Time Status Tracking
Track every document — Sent, Opened, Viewed, Signed, Completed. Never wonder where a contract stands.
Multi-Party Roles
Assign Signer, Approver, CC Viewer, or custom roles. Route documents through any approval chain.
Custom Fields
Add checkboxes, date fields, text inputs, dropdowns, and initials fields anywhere in your document.
Enterprise-Grade Security
SOC 2 and HIPAA compliant. All documents encrypted in transit and at rest. Full audit trail on every action.
Native Invoice Ninja Integration
The only e-signing platform built into invoicing software. Sign → invoice → get paid, all in one flow.
Document Templates
Build reusable templates for contracts, proposals, NDAs, and SOWs. Pre-place all fields once — send in seconds.
Sign on Any Device
Recipients sign from desktop, tablet, or mobile — no account or app install required.
Document Management
Store, organize, and search all signed documents in one place. Attach to invoices, clients, or projects.
Automated Reminders
Set automatic signing reminders so nothing gets forgotten. Customize timing and message per reminder.
Bulk Sending
Send the same document to multiple recipients at once — perfect for onboarding forms and compliance.
From document to signed deal in minutes
No learning curve. No complicated setup. Upload, prepare, send, sign.
Upload your document
Upload any PDF or Word doc, or start from a DocuNinja template — contracts, proposals, NDAs, SOWs.
Add fields & recipients
Drag and drop signature, date, initials, and custom fields. Add signers and assign roles in seconds.
Send & track in real time
Recipients get an email link — no account required. Watch progress in real time as they open and sign.
Signed → Invoiced → Paid
Receive the completed document automatically. Invoice Ninja users convert to a paid invoice in one click.
Who uses DocuNinja
Built for every business that needs documents signed
⚖️
Legal & Compliance
Retainer agreements, engagement letters, NDAs, settlement documents. Full audit trail and legally binding signatures.
Contracts · NDAs · Retainers
🏗️
Trades & Construction
Get client sign-off on quotes and scopes of work before you start. Signed contracts attach directly to invoices.
Quotes · Scopes of Work · Lien Waivers
💻
Agencies & Freelancers
Send proposals and project agreements for approval. Convert signed proposals to invoices in one click.
Proposals · Project Agreements
🏥
Healthcare & Wellness
HIPAA-compliant patient intake forms, consent documents, and treatment agreements signed digitally.
Intake Forms · Consent · HIPAA
🏠
Real Estate
Listing agreements, leases, buyer agreements, and disclosure forms — signed from any device, any location.
Agreements · Leases · Disclosures
🎓
Education & Coaching
Coaching agreements, enrollment forms, and payment plans — signed before the first session begins.
Coaching Agreements · Enrollment
The only e-signing tool that also invoices your client
Every other e-signing tool stops at the signature. DocuNinja goes further — because it lives inside the same platform you use to invoice, track time, and get paid.
- Send a proposal for signing — auto-convert to invoice on approval
- Lock document delivery until after payment is confirmed
- Clients sign and pay in the same branded portal
- Signed contracts automatically attached to invoice records
- One platform for the entire client relationship — not two
1
Send proposal via DocuNinja
Client receives email → opens in client portal
📄
2
Client signs digitally
You're notified instantly — full audit trail recorded
✍️
3
Invoice auto-generated
1-click conversion — ready to send immediately
🧾
4
Client pays — deal closed
Stripe, PayPal, GoCardless & more
💳
Works with
Invoice Ninja
Stripe
PayPal
Zapier
Make
n8n
Google Drive
Dropbox
Simple pricing. No per-envelope fees. Ever.
Use DocuNinja standalone, or add it to your Invoice Ninja Enterprise plan for just $6/user/month. All plans include unlimited documents.
Free
- 1 document per month
- Legally binding e-signatures
- Co-signing & multiple signatories
- Document audit trail
- Custom fields (checkboxes, dates, text)
Pro
- Unlimited documents — no envelope limits
- Unlimited e-signatures & signatories
- Document audit trail & real-time tracking
- Custom branding — logo, colors & fonts
- Custom email templates for signing requests
- Custom fields (checkboxes, dates, text)
- SOC 2, HIPAA, GDPR, eIDAS & ESIGN compliant
Enterprise
- All DocuNinja Pro features, plus:
- Native Invoice Ninja integration — sign then invoice in one click
- Attach signed contracts directly to invoices
- Lock document delivery until payment received
- Team roles & user permissions
- Clients sign & pay in one branded portal
- Requires an active Invoice Ninja Enterprise plan
All plans: SOC 2 · HIPAA · GDPR · eIDAS · UETA · ESIGN Act compliant · No per-envelope fees · See full pricing on DocuNinja.co →
Stop chasing signatures.
Start closing with
DocuNinja.
The e-signing platform built for businesses that also need to get paid.
Free to start · No credit card · No per-envelope fees · 30-day money back on paid plans