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What is Postcoder?

Postcoder – Customer Data Verification Made Simple. Trusted by NHS, Sky, KFC, Rightmove, and over 10,000 organisations globally, Postcoder is the all-in-one API platform from Allies Computing that helps businesses collect accurate, verified customer data from the very first interaction. Rated 4.6 stars on G2 and the winner of multiple industry awards, it's the toolkit that keeps forms fast, data clean, and customer journeys completely friction-free. Postcoder's address lookup lets customers find their address in seconds — whether they type a postcode, begin entering a street name, or search by geographic coordinates. The service draws on Royal Mail PAF, Multiple Residence data, Ordnance Survey AddressBase, and international address databases spanning 249 countries, delivering consistently high match rates both in the UK and overseas. Beyond addresses, Postcoder packages a full suite of contact data tools into a single API integration: - Bank account validation: Confirm sort code and account number combinations in real time, retrieve branch-level details, and establish direct debit eligibility before a payment mandate is submitted. - Email validation: Go beyond syntax checks to assess domain health, detect disposable addresses, and score deliverability risk, keeping CRM lists and transactional inboxes reliable. - Mobile number validation: Confirm whether a mobile is live and reachable across more than 200 countries, cutting wasted spend on undeliverable SMS communications. - OTP verification: Add an SMS-based one-time password layer to sign-up, login, or checkout flows to protect accounts and verify identity at the point of entry. Rather than managing multiple vendors, businesses get one integration, one dashboard, and one support team. Getting started takes minutes — a free trial is available with no payment details required, and the documentation includes ready-to-use sample code across popular languages.

What is Data8?

Data8 delivers a wide array of cloud-based solutions that prioritize the quality of your data, ensuring that your information remains accurate, clean, and up-to-date. We provide customized services tailored to meet the unique demands of organizations, including data validation, cleansing, migration, and monitoring. Our validation suite features real-time verification tools like address autocomplete, postcode lookup, bank account validation, email verification, name and phone validation, along with comprehensive business insights, all aimed at capturing precise customer information at the point of entry. To bolster both B2B and B2C databases, Data8 offers a variety of services such as data appending and enhancement, validation of email and phone numbers, suppression of records for individuals who have relocated or passed away, deduplication, merging records, PAF cleansing, and preference management. Furthermore, Data8 boasts an automated deduplication solution that integrates effortlessly with Microsoft Dynamics 365, enabling efficient deduplication, merging, and standardization of numerous records. This holistic methodology not only enhances the integrity of your data but also optimizes operational efficiency, ultimately facilitating more informed decision-making within your organization, and ensuring that your data works harder for your business.

Media

Media

Integrations Supported

C#
Divi
Gutenberg Technology
JavaScript
Ninja Forms
PHP
Wix

Integrations Supported

Drupal
Formstack
Google Chrome
Microsoft Dynamics 365
OpenCart
PrestaShop
Sage 50
Salesforce
Shopify
Unbounce
WooCommerce
WordPress
Zapier

API Availability

Has API

API Availability

Pricing Information

£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 Offered?

Pricing Information

$0.053 per lookup
Free Trial Offered?

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Online Training

Training Options

Documentation Hub
Online Training
On-Site Training

Company Facts

Organization Name

Allies Computing

Date Founded

1987

Company Location

United Kingdom

Company Website

postcoder.com

Company Facts

Organization Name

Data8

Date Founded

2005

Company Location

United Kingdom

Company Website

www.data-8.co.uk

Categories and Features

Address Verification

Address Validation
Autocomplete
Automatic Formatting
Data Cleansing
Data Verification
Geolocation
Metadata Management
Reporting / Analytics
Search / Filter

Categories and Features

Address Verification

Not specified

Bank Verification

Not specified

Data Cleansing

Not specified

Data Quality

Not specified

Data Validation

Not specified

Email Verification

Not specified

Phone Verification

Not specified

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Allies Computing