Verify Any Address.
Anywhere.
Postal.id delivers proof-of-address verification across 30+ countries. One platform, UK, EU, and US coverage with tracked postal delivery. Drag the globe to explore.
Proof of Address Verification
The digital world is compromised. The physical isn't.
AI can generate utility bills in seconds. It cannot intercept tracked mail. Secure your onboarding with unfakeable, postal-grade verification.
30+
Countries Covered
99.7%
Letter Delivery Rate
<5 min
Digital Verification
100%
Audit Trail Coverage
The Threat Matrix
In 2024, generative AI killed digital verification.
Document uploads, selfie checks, and utility bill screenshots are no longer proof of anything. The only verification AI cannot forge is physical mail delivery to a real address.
10s
Time it takes an open-source LLM to generate a pixel-perfect utility bill PDF.
£2M+
Average regulatory fine for severe KYC compliance failures involving synthetic identities.
0
Number of deepfakes that can intercept physical, tracked mail at a registered address.
Product
Everything you need for compliant address verification
Unfakeable postal verification
A physical letter with a unique OTP is dispatched via tracked mail to the claimed address. No digital shortcut can replicate physical mail delivery — making it structurally resistant to deepfakes, synthetic IDs, and document forgery.
- Physical letter dispatch via tracked mail
- 10-character one-time passcode
- Ghost address and mail-forwarding detection
- UK, EU, and US coverage via dedicated regional APIs
Compliance Infrastructure
Artifacts of certainty.
We don't just verify addresses. We generate cryptographic, auditor-grade evidence tied to physical reality.
Tamper-Evident PDFs
Every completed verification generates an immutable evidence pack. Full timeline, assurance level, risk signals, policy decisions — sealed with a SHA-256 hash chain. Satisfies FCA, SRA, and HMRC requirements out of the box.
SHA-256 • Immutable • Auditor-ready
Webhook Telemetry
Real-time HMAC-SHA256 signed webhook notifications for every status change. Case created, letter dispatched, code verified, evidence sealed — your systems know the moment it happens. Exponential backoff retry with delivery logging.
HMAC-SHA256 • Real-time • Retry logic
Global Routing
Intelligent postal provider routing across 30+ countries. European API for UK and EU, North American API for US and Canada. Automatic provider selection based on destination country, tracked delivery where available, with fallback to digital-only in unsupported regions.
30+ countries • Auto-routing • Tracked delivery
How It Works
Five steps to unfakeable address proof
Create Case
Submit the subject name and address via dashboard, API, or CSV batch upload. Select a verification bundle. Postal.id generates a unique case ID and begins the workflow.
Digital Verification
An OTP is sent via email and/or SMS. The subject enters the code on a secure verification page. Completes in under 5 minutes with full delivery tracking.
Dispatch Letter
A tracked letter with a unique postal OTP is printed and dispatched to the claimed address. QR code included for scan-to-verify convenience.
Verify & Locate
The subject receives the letter, enters the postal code online. If geo-location is enabled, GPS coordinates are captured to confirm physical presence at the address.
Evidence Sealed
All verification layers are complete. Postal.id seals the tamper-evident evidence pack with SHA-256 hash chain. Download the PDF or receive it via webhook.
Platform
Everything you need to run verification at scale.
Beyond verification — a complete operational platform for managing cases, teams, templates, and compliance across your entire organisation.
Team Management
Invite team members, assign roles — admin, caseworker, auditor. Control who can create cases, view evidence, and manage settings.
Template Engine
Customise every email, SMS, and letter your subjects receive. Handlebars variables, live preview, per-channel templates. Your brand, your tone.
Smart Notifications
In-app and email alerts for case completions, failures, usage warnings, and billing events. Never miss a critical verification update.
Recipient Database
Searchable history of every subject you've verified. Full case timeline, layer-by-layer status, missing steps detection, and re-verification tracking.
Risk Scoring
Automatic fraud signal detection — disposable emails, address velocity, ghost addresses, mail forwarding services. Risk-based step-up from digital to postal.
Reporting & Export
Dashboard analytics, verification funnel metrics, and CSV export. Case stats by status, average completion time, digital vs postal verification rates.
QR Scan-to-Verify
Every postal letter includes a QR code linking directly to the verification page with the OTP pre-filled. Faster, fewer errors, trackable engagement.
Automated Reminders
Configurable automatic reminders when subjects haven't completed verification. Manual reminder option for caseworkers. Full reminder history per case.
Referral Programme
Share your referral code, earn free verifications. Built-in social sharing to WhatsApp, LinkedIn, X, and email. Track clicks, signups, and credits earned.
Global Coverage
Verified in 30+ countries. Tracked where it matters.
Full postal verification across the UK, EU, and North America. Digital verification everywhere. Automatic provider routing based on destination.
Full Featured
Address pre-verification included
Tracked delivery
Full + Tracked
Tracked delivery
Full Coverage
+ 20 more EU countries
Standard delivery
Digital Only
No postal
Need a country we don't cover yet? Contact us.
Industries
Built for regulated industries
Postal.id serves firms where proof of address is a regulatory requirement, not a nice-to-have.
Law Firms
SRA-compliant client onboarding with postal-grade proof of address. Evidence packs designed for regulatory audits. Batch verify entire client books during annual re-certification.
Accountancy
Meet HMRC anti-money laundering requirements with auditor-ready evidence packs. Automated reminders chase outstanding verifications. CSV upload for bulk client onboarding.
Financial Services
FCA-compliant KYC with unfakeable physical verification that AI cannot spoof. Risk-based step-up logic. Webhook integration for real-time compliance workflows.
Company Formation
Verify registered office and director addresses at the point of incorporation. Postal + digital bundles for different assurance levels. API-first for agent platforms.
Property & Lettings
Verify tenant addresses before lease signing. Postal OTP confirms physical residence. Geo-location verification adds an extra layer of confidence for high-value lettings.
Higher Education
Student address verification for enrolment, financial aid, and accommodation. Batch CSV upload for cohort onboarding. GDPR-compliant data retention with automatic PII purge.
Let the numbers speak
Countries Covered
Letter Delivery Rate
Verification Layers
Audit Trail Coverage
Developer Experience
Integrate in minutes, not months.
RESTful API with real-time HMAC-signed webhooks. Create cases, configure bundles, track verification layers, and download evidence packs programmatically. Full sandbox environment with test API keys. Batch upload via API or CSV.
const response = await fetch(
'https://api.postal.id/v1/cases',
{
method: 'POST',
headers: {
'Authorization': 'Bearer pk_live_...',
'Content-Type': 'application/json',
},
body: JSON.stringify({
subject: {
name: 'Jane Smith',
email: 'jane@example.com',
},
address: {
line1: '10 Downing Street',
city: 'London',
postcode: 'SW1A 2AA',
country: 'GB',
},
bundleId: 'bundle_enhanced',
}),
}
)
const { data } = await response.json()
// { id: 'case_8f2a...', status: 'CREATED' }Testimonials
Trusted by regulated firms
“We replaced document uploads with Postal.id postal verification across all client onboarding. The batch CSV upload saved us weeks during annual re-certification — 200 clients verified in a single afternoon.”
Sarah Mitchell
Managing Partner, Mitchell & Clarke Solicitors
“The API integration took less than a day. The webhook telemetry feeds directly into our compliance pipeline. We verify at account opening and the risk scoring handles edge cases we used to manage manually.”
David Chen
CTO, Verity Finance
“Our AML compliance scores improved significantly after switching to postal OTP. The configurable verification bundles let us apply different assurance levels per client risk tier. The evidence packs are exactly what HMRC expects.”
Rachel Okonkwo
Head of Compliance, Pennington Accountants
Start verifying addresses today.
Create your free account and send your first verification in under two minutes. No credit card required. One free verification included.