Prove you delivered. Prove they accepted.

Legal proof that your files were delivered, reviewed, and accepted. Identity-verified, QR-certified — no bureaucracy.

Free forever. No credit card required. Court-admissible digital certificate Recipients sign without an account Permanent public QR verification
2,000+
professionals protected
50,000+
documents accepted
100%
ESIGN compliant
$0
to start today

The moment you'll regret not using Ulibox

“Two words that can cost you everything: never received it.”

You sent the contract. You sent the deliverable. You sent the signed proposal. But when the other party denies receiving it — or worse, denies accepting it — what do you have? A read receipt that proves nothing. A chat message without a signature. Nothing a judge or arbitrator would call evidence.

With Ulibox, every delivery becomes evidence. Every acceptance becomes proof.

From sent to signed — every step on record

Everything you need to share files with real legal protection

Secure links with full control

Send files through protected links with expiration dates, download limits, and tracking of who accessed what.

Identity-verified signatures

Recipients confirm their identity via email or SMS before signing — no ambiguity about who accepted.

Access only for who should

An exclusive access code ensures only the right person can view the content.

Tamper-proof certificate

Every acceptance generates a digitally signed certificate with a unique code, timestamp, IP address, and file integrity hash.

Public file verification

Anyone can confirm a file hasn't been altered since signing — no account needed, permanently public.

Create & share documents

Write rich documents directly in Ulibox, export as PDF, and require formal acceptance — all in one place.

Team management with roles

Invite collaborators with role-based permissions (Owner, Admin, Member) and keep control centralized.

Full audit trail

Every upload, download, share, and signature is logged. A complete audit trail ready when you need it.

How It Works

In under 2 minutes, you have legally documented proof of acceptance

01

Upload your files or create a document

Drag and drop files, organize in folders, or write a document directly in Ulibox.

02

Configure and share

Set who must sign, add an expiration date and access code — then generate the secure link.

03

Recipient confirms their identity

They receive a code by email or SMS and verify who they are before accessing anything.

04

They review the content and sign

They read, sign with the digital pad, and confirm acceptance. Everything tracked, nothing ambiguous.

05

Certificate generated automatically

Both parties receive a signed certificate with a QR code — verifiable at any time, forever.

06

Permanent, public proof

The signature and file integrity are available for public verification permanently.

ulibox.com

Acceptance Certificate

Document

Project_Deliverables_v3.pdf

Signed by

client@company.com

Timestamp

2024-03-15 · 14:32 EST

SHA-256

a4f9c2e1b8d3...7f2a

Verified

Who needs Ulibox?

Professionals who need more than good faith — they need documented proof

Lawyers

Prove clients received and accepted terms, case documents, or proposals. No room for denial.

Landlords & Property Managers

Inspection reports, move-in/out terms, lease agreements — all formally accepted, dispute-proof.

Agencies & Freelancers

Deliver projects with documented acceptance. Every approval on record, every scope change traceable.

HR & Compliance

Policies, handbooks, and training docs formally accepted by each employee. Audit-ready when you need it.

Anyone who needs proof, not just faith

If you send important files and depend on the other party honoring what they accepted, Ulibox is for you.

Why Ulibox?

01

Sending became a traceable acceptance

Every acceptance is a documented event — who signed, when, from which IP, on which file. Complete proof, no gaps.

02

Legally solid

Identity verification, immutable timestamps, ESIGN compliance, and tamper-proof digital certificates.

03

Zero friction for recipients

No account needed. They click the link, verify their identity, and sign. Takes under a minute.

04

Security you cannot see — but it is there

End-to-end encryption, Merkle tree integrity hashing, and granular access controls on every share.

Start free. Pay only when you grow.

No surprises, no traps. The free plan is yours to keep, forever.

Free

$0 /month
  • 1 GB storage
  • Up to 10 shares
  • 1 member
Start Free

Hobby

$2 /month
  • 50 GB storage
  • Unlimited shares
  • Up to 5 members
  • Signers & access codes
  • 200 email notifications/mo
  • 50 SMS/mo
Get Started
Most popular

Pro

$5 /month
  • 200 GB storage
  • Unlimited shares
  • Up to 15 members
  • Signers & access codes
  • 1,000 email notifications/mo
  • 200 SMS/mo
Get Started

Business

$10 /month
  • 500 GB storage
  • Unlimited shares
  • Up to 50 members
  • Signers & access codes
  • Unlimited email notifications
  • 1,000 SMS/mo
Get Started

One dispute will cost more than a year of Ulibox.

Start free today and never again depend on someone's good faith to prove you delivered.

Get Protected Free →

No credit card. No trial period. Free forever.

ESIGN Compliant
End-to-end encrypted
Immutable certificates
No credit card needed