Custom DocuSign integration development
Build electronic signing into your business processes. Embedded signing in your own application, automatic contract generation from AFAS or Exact Online, and real-time status webhooks — fully eIDAS-compliant.
Why a DocuSign integration?
DocuSign processes more than 1 billion envelopes and serves over 1 million customers worldwide. 44% of all documents are signed within 15 minutes, 80% within 24 hours. But the real value lies in integration with your own systems.
⏱️ From 5 Days to 14 Minutes
A paper signature takes an average of 5-7 working days: printing, sending, waiting, receiving, scanning and archiving. With DocuSign embedded in your application, the customer signs during the conversation, while your sales rep watches on screen.
💰 €31 Saved per Document
Every wet signature costs an average of $36 (~€33) in paper, printing, postage, storage and labour. Sending registered post via PostNL: €8.50+. An electronic signature costs €1-5 per envelope. At 1.000 documents per year, you save €28.000+.
⚖️ Legally Watertight (eIDAS)
Electronic signatures are legally binding in the Netherlands under Art. 6:227a BW and the European eIDAS Regulation. DocuSign supports all three levels: SES (standard contracts), AES (financial documents), and QES (government/tenders). Including a full audit trail.
🔗 Standalone Tool without Integration
DocuSign on its own works, but it creates an isolated island. Contracts sit in DocuSign, customer data in your CRM, invoices in Exact Online. Without integration, you end up typing everything twice. With an API integration, data flows automatically from one system to the next.
Which DocuSign Integrations We Build
From embedded signing within your own application to full contract automation with AFAS and Exact Online. We build the integration that fits your workflow.
Embedded Signing
The signer signs within your application, with no redirect to DocuSign and no separate tab. Your client or employee sees your own branding and experiences a seamless process.
- ✅ Signing ceremony in iframe or redirect
- ✅ Custom branding (logo, colours, email text)
- ✅ Responsive, works on desktop and mobile
- ✅ Signing URL valid for 5 minutes (security measure)
AFAS → DocuSign Workflow
Generate contracts from AFAS data and send them automatically for signature. The signed status and PDF are written back to AFAS.
- ✅ AFAS GetConnector → contract generation → DocuSign envelope
- ✅ Connect webhook → AFAS UpdateConnector (status update)
- ✅ Signed PDF automatically saved to the AFAS file
- ✅ Multiple signers in sequence (manager → board)
Exact Online integration
Connect DocuSign to Exact Online for automatic contract processing. Quote accepted? The invoice is created straight away.
- ✅ Exact Online relation/project → DocuSign quote
- ✅ Signed quote → automatic invoice in Exact
- ✅ Signed PDF attached to the Exact relation
- ✅ Budget monitoring: contract value recorded directly in project administration
HR & Onboarding Automation
New employee hired? The employment contract, NDA and company policy are sent automatically as a single envelope to the candidate, straight from your HR system.
- ✅ Recruitee/Personio hired → DocuSign contract bundle
- ✅ Template with merge fields (name, role, salary, start date)
- ✅ Signing order: employee → manager → HR director
- ✅ Signed contract → AFAS HRM personnel file
Bulk Sending & PowerForms
Send the same document to hundreds of recipients at once, or create self-service forms through which clients start a signing session themselves.
- ✅ Bulk send: up to 1,000 recipients per batch
- ✅ CSV upload with personalised merge data
- ✅ PowerForms: shareable URL for self-signing
- ✅ Ideal for: annual policy statements, seasonal contracts, NDAs
CRM Integration (Salesforce/HubSpot)
Send contracts directly from your CRM deal and write the signing status back automatically. No switching tabs, no manual updates.
- ✅ Deal/opportunity → DocuSign quote with one click
- ✅ Signed → deal stage updated automatically
- ✅ Signed PDF saved to the contact record
- ✅ Custom CRM fields used as merge fields in the contract
Electronic Signatures and Dutch Law
Is an electronic signature legally binding? Yes, but the appropriate level depends on the document type. The eIDAS Regulation and the Dutch Civil Code define three levels.
⚠️ Not Possible Electronically
Certain documents in the Netherlands still require a notarial deed and cannot be signed electronically: mortgage deeds, wills, articles of association of a BV, prenuptial agreements and the deed of transfer in property sales.
✓ Art. 6:227a Dutch Civil Code
Where the law requires a written form, this can be satisfied with an electronic signature, provided the method is sufficiently reliable given its purpose and the circumstances. DocuSign's audit trail, authentication and tamper detection more than meet this requirement.
DocuSign API: Technical Capabilities
We know the DocuSign eSignature REST API v2.1 inside out. Here is what you need to know about the technical architecture of a production-grade integration.
API Specifications
JWT vs. Authorisation Code
JWT Grant (we recommend this)
Server-to-server, no user required. Ideal for automated workflows: generate a contract on an event in AFAS → DocuSign → webhook back. Uses an RSA key pair. One-off consent per user.
Authorisation Code Grant
For multi-user apps where each user works from their own DocuSign account. The access token expires after 8 hours, the refresh token after 30 days. More complex, but necessary for user-specific templates.
Available Tab Types
Conditional logic: show or hide fields based on other answers. Formula tabs calculate values automatically. Payment tabs collect payment directly on signing (Stripe/Braintree).
Recipient Types
- Signer — must sign the document
- Carbon Copy — receives a copy on completion
- In-Person Signer — signs on the sender's device
- Editor — may modify the document before signing
- Witness — signs as a witness to another signer
DocuSign vs. Alternatives in the Netherlands
DocuSign is the market leader with roughly 60-65% global market share, but there are strong alternatives, especially for specifically Dutch use cases. We advise on and integrate all of them.
Our Advice
Commercial/international: DocuSign — best API, largest template library, most pre-built integrations. Dutch government/public sector: ValidSign/Evidos — iDIN, eHerkenning, NL-hosted QES. Budget/simple: Dropbox Sign — developer-friendly, quick to integrate.
Go-Live Review
DocuSign requires a Go-Live review before your integration can move to production. They check the OAuth implementation, error handling, and correct use of Connect webhooks (rather than polling). We have been through this process dozens of times and know exactly what they expect.
How We Build a DocuSign Integration
From sandbox to production, including DocuSign's mandatory Go-Live review. We develop on the free developer sandbox and only go live once everything has been tested and approved.
Process Mapping & Template Design
Which documents, who signs in what order, which fields need to be populated dynamically? We map out your complete signing workflow and design the templates with the right tabs (signature, initials, date, checkbox, text fields).
Sandbox Development
Development on DocuSign's free developer sandbox — unlimited envelopes, full API access. We build the OAuth flow (JWT), envelope creation, embedded signing and the Connect webhook handler. Weekly demos show progress.
Go-Live Review & Production
DocuSign checks your integration before granting production API access. They verify OAuth, error handling, webhook usage and rate limit compliance. We prepare the submission and guide you through the review process, with approval typically within 3-5 working days.
Monitoring & Maintenance
After go-live, we monitor webhook deliveries, token renewals and API errors. DocuSign deprecates API versions with ample notice, so we migrate proactively. Includes alerting for declined envelopes and failed Connect deliveries.