Web APIs by Melissa
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Average Ratings 4 Ratings
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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
Looking for fast, easy solutions to protect your entire data lifecycle? Look no further. Melissa’s Web APIs offer a range of capabilities to keep your customer data clean, verified, and enriched, powered by AI-driven reference data. Our solutions work throughout the entire data lifecycle – whether in real time, at point of entry or in batch.
• Global Address: Verify & standardize addresses in 240+ countries & territories with postal authority certified coding & premise-level geocoding.
• Global Email: Verify email mailboxes, syntax, spelling & domains in real time to ensure they are deliverable.
• Global Name: Verify, standardize & parse person & business names with intelligent recognition of millions of first & last names.
• Global Phone: Verify phone as active, identify line type, & return geographic details, dominant language & carrier for 200+ countries.
• Global IP Locator: Gain a geolocation of an IP address with lat & long, proxy info, city, region & country.
• Property (U.S. & Canada): Return comprehensive property & mortgage data for 140+ million U.S. properties.
• Personator (U.S. & Canada): USPS® CASS/DPV certified address checking, name parsing & genderizing, phone & email verification are all easily performed with this API.
With these tools at your disposal, managing and protecting your customer data has never been easier.
API Access
Has API
Yes
API Access
Has API
Yes
Integrations
ArcGIS
No
C#
Yes
Divi
Yes
Forminator
Yes
Google Sheets
No
Gravity Forms
Yes
Gutenberg Technology
Yes
HTML
Yes
Microsoft Dynamics 365
No
Ninja Forms
Yes
Integrations
ArcGIS
Yes
C#
No
Divi
No
Forminator
No
Google Sheets
Yes
Gravity Forms
No
Gutenberg Technology
No
HTML
No
Microsoft Dynamics 365
Yes
Ninja Forms
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
$4.95 for 1,000 credits
Melissa services consume credits that can be purchased easily and automatically. Business plans are also available. Get 1,000 credits with a $4.95 activation fee, and we’ll top your account to 1,000 credits each month.
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
Yes
iPhone App
No
iPad App
No
Android App
No
Windows
Yes
Mac
Yes
Linux
Yes
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
Yes
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
Melissa
Founded
1985
Country
United States
Website
www.melissa.com/developer
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
Yes
Data Cleansing
Yes
Data Discovery
Yes
Data Quality Control
Yes
Data Verification
Yes
Geographic Maps
Yes
Geolocation
Yes
Metadata Management
Yes
Reporting / Analytics
Yes
Search / Filter
Yes
Data Management
Customer Data
No
Data Analysis
No
Data Capture
No
Data Integration
No
Data Migration
No
Data Quality Control
No
Data Security
No
Information Governance
No
Master Data Management
No
Match & Merge
Yes
Data Quality
Address Validation
Yes
Data Deduplication
Yes
Data Discovery
Yes
Data Profililng
Yes
Master Data Management
Yes
Match & Merge
Yes
Metadata Management
No
Email Verification
Bulk Email Verification
Yes
Catch-all Server Detection
Yes
Disposable Email Detection
Yes
Domain Check
Yes
Mail Server Validation
Yes
Single Email Verification
Yes
Spam Trap Detection
Yes
Syntax Check
Yes
