Preparation & sending — HEPHAESTUS
Generates the document from your templates, fills variables, sends the secure signature link.
Sovereign e-signature. Automatic archiving. Zero paper, zero chasing.
Sign Flow deploys 3 AI agents to prepare, send, follow up and archive your contracts — in full compliance with European law.
No credit card · eIDAS compliant · EU sovereign
Your AI agents
Tracking & follow-ups — KE-OS-1
Monitors every document status, auto-follows up signatories at defined intervals, alerts on blockers.
Sovereign archiving — ARBITER
Archives each signed document with certified timestamp, metadata and audit proof on Proton Drive infrastructure.
What an unsigned contract really costs you
<4h
average contract signing time
Helix Sign Flow beta benchmark 2026
98%
signature rate with auto follow-up
Helix Sign Flow beta benchmark 2026
100%
eIDAS and EU law compliant
EU Regulation 910/2014 + French Civil Code art. 1367
Before Helix vs. After Helix
Before After Measured gain
× Quotes sent by email, never signed, forgotten
→ Signature obtained in under 4h on average
−90% signing time
× Contract files scattered across 4 different tools
→ All documents centralized, versioned, auditable
0 document lost
× Awkward manual follow-ups with clients
→ Discreet, effective automatic follow-ups
+98% signing rate
× Uncertain legal compliance on digital signatures
→ Guaranteed qualified eIDAS compliance
100% EU legal
See Helix Sign Flow in action
2 minutes: create contract from template, send via Yousign, client signs, archived. No script.
Connected to your contract environment
Secure OAuth. Qualified eIDAS signature. EU legal compliance.
E-signature
D Docusign Y Yousign U Universign H Hellosign
CRM & DMS
H Hubspot S Salesforce N Notion P Proton Drive
Fair pricing to close faster
No commitment. Cancel in 1 click.
Free
0 / month
3 documents/month · 1 signatory
- 3 documents/month
- 1 signatory
- Yousign only
- Community support
Pro
39 € / month
30 documents/month · unlimited signatories
- 30 documents/month
- Unlimited signatories
- HEPHAESTUS + KE-OS-1 agents
- Unlimited templates
- Auto follow-up reminders
- 24h email support
Business
149 € / month
Unlimited · full audit trail · 3 agents
- Unlimited documents
- HEPHAESTUS+KE-OS-1+ARBITER agents
- Full audit trail
- Multi-user (5 seats)
- API + webhooks
- Priority SLA support
Frequently Asked Questions
01 Does the signature have legal value in Europe?
Yes. Sign Flow uses advanced electronic signature compliant with eIDAS, recognized by French and European courts.
02 Are my documents stored in Europe?
EU infrastructure (Frankfurt + Proton Drive Switzerland). No contractual data leaves European jurisdiction.
03 Can we manage multi-signatory documents?
Yes. Configurable signing order, individual notifications, per-document tracking dashboard.
04 Does it work with existing Word templates?
Yes — direct .docx import with automatic field detection. Conversion to Helix template without redoing the document.
Your contracts get signed. Your archives get built. Without you.
Sign Flow is the only signature co-pilot built for demanding European SMEs.
Start Sign Flow for free