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Description

Postcoder is a global address verification and customer data validation API used by over 10,000 organisations worldwide. Built by Allies Computing, Postcoder helps businesses capture clean, accurate customer data at the point of entry, reducing errors, cutting failed deliveries, and speeding up checkout and onboarding flows. Postcoder's address lookup API lets users find verified addresses instantly using postcode lookup or address autocomplete. Look up addresses based on a postcode, part of an address or a coordinate position. Postcoder provides access to Royal Mail PAF and Multiple Residence addresses, Ordnance Survey AddressBase property records and international addresses in 249 countries. Beyond address verification, Postcoder offers a full suite of contact data validation tools in a single API integration. Bank account validation checks sort codes and account numbers in real time, confirming validity, returning branch details, and verifying direct debit eligibility - useful for subscription businesses, lenders, and anyone collecting payment mandates. Email validation checks formatting, domain validity, and flags disposable or high-risk addresses to keep CRM data clean and improve deliverability. Mobile number validation checks whether a number is active and connected across 200+ countries, helping reduce wasted SMS spend and improve contact rates. For added security, Postcoder also offers OTP verification, delivering one-time passwords via SMS to protect customer accounts at sign-up, login, or checkout. Developers appreciate the comprehensive documentation and sample code, and a 30-day free trial means teams can get up and running in minutes without a credit card.

Description

One in five addresses contain errors, which can lead to late or undeliverable mail. Our address validation US service checks and corrects addresses up to ZIP+4, making sure they are valid and deliverable. This helps avoid costly shipping and customer service issues. Our validation engine uses multiple authoritative sources to validate and correct US shipping and mailing addresses with unmatched precision. It includes over 160 million USPS and 15 million non-postal address. Our engine exceeds the CASS (Coding accuracy Support System) accuracy standard of the USPS. Our software focuses on addressing precision, reducing costs associated with undeliverable mail, lost mail, or returned post. Service Objects' Address Validation can be used to ensure delivery of products or invoices while avoiding expensive address correction fees charged by the USPS or third-party shippers.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

C# Yes 
CSS Yes 
Contact Form 7 Yes 
Divi Yes 
Elementor Yes 
Formidable Forms Yes 
Forminator Yes 
Gravity Forms Yes 
Gutenberg Technology Yes 
HTML Yes 
JavaScript Yes 
Ninja Forms Yes 
Node.js Yes 
PHP Yes 
Python Yes 
WP Fluent Forms Yes 
Wix Yes 

Integrations

C# No 
CSS No 
Contact Form 7 No 
Divi No 
Elementor No 
Formidable Forms No 
Forminator No 
Gravity Forms No 
Gutenberg Technology No 
HTML No 
JavaScript No 
Ninja Forms No 
Node.js No 
PHP No 
Python No 
WP Fluent Forms No 
Wix No 

Pricing Details

£27 per 500 credits
Start with a free trial, then pay-as-you-go or pay monthly. Credit packs start at £27, and monthly plans start at £45. Volume discounts and charity/public sector pricing available.
Free Trial Yes 
Free Version No 

Pricing Details

$299/month
The free trial offering includes the following:

- Access to 22 validation APIs.
- Test customer data validation APIs with seamless integration.
- 500 free test transactions.
- Enjoy 500 risk-free test validations.
- In-depth developer guides.
- Explore comprehensive guides to unlock our full potential.
- Dedicated customer support.
- Receive personalized support whenever you need it.
Free Trial Yes 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours Yes 
Live Rep (24/7) Yes 
Online Support Yes 

Customer Support

Business Hours Yes 
Live Rep (24/7) Yes 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

Allies Computing

Founded

1987

Country

United Kingdom

Website

postcoder.com

Vendor Details

Company Name

Service Objects

Founded

2001

Country

United States

Website

www.serviceobjects.com/address-validation-us/

Product Features

Address Verification

Address Validation Yes 
Autocomplete Yes 
Automatic Formatting Yes 
Data Cleansing Yes 
Data Discovery No 
Data Quality Control No 
Data Verification Yes 
Geographic Maps No 
Geolocation Yes 
Metadata Management Yes 
Reporting / Analytics Yes 
Search / Filter Yes 

Product Features

Address Verification

Address Validation Yes 
Autocomplete Yes 
Automatic Formatting No 
Data Cleansing Yes 
Data Discovery No 
Data Quality Control No 
Data Verification Yes 
Geographic Maps No 
Geolocation Yes 
Metadata Management No 
Reporting / Analytics No 
Search / Filter No 

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