PostcoderAllies Computing
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Related Products
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About
Postcoder is an API from Allies Computing that gives developers a single endpoint for verifying and validating customer contact data at the point of entry. Used across sectors from healthcare to retail, it's built to drop into checkout, onboarding, and account creation flows with minimal friction.
What's included:
Address lookup – Postcode, partial address, or coordinate-based search across Royal Mail PAF, Ordnance Survey AddressBase, and 249 countries worldwide.
Bank validation – Real-time sort code and account number verification, with branch data and direct debit eligibility returned in the response.
Email validation – Domain and formatting checks with disposable address detection.
Mobile validation – Live network status checks across 200+ countries.
OTP verification – SMS-based one-time password delivery.
Clear documentation, multi-language sample code, and a straightforward REST structure mean integration is quick. 30 day free trial with no credit card required.
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About
charlymail is an email verification and lead data platform built for people who send at volume: cold outreach teams, affiliate marketers and lead-generation agencies.
• VALIDATE — syntax, domain, MX records, role addresses, disposable domains, catch-all detection
• SMTP — a deep check that opens a conversation with the receiving mail server and confirms the mailbox exists, without sending any message
• ENRICH — name, gender, country, provider and corporate/personal classification
• COLLECT — scrape addresses by niche from public sources
Most services charge full price for every address in your file, including the obviously broken ones. charlymail splits the work. The first pass costs one token per address and filters out the junk. You then narrow the list by score, provider or country, and only that subset gets the expensive SMTP check. Addresses verified recently come back from cache for free.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
|
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Audience
Organizations wanting a tool to improve their address lookup and form validation processes
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Audience
B2B
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
£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 Version
Free Trial
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Pricing
No information available.
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationAllies Computing
Founded: 1987
United Kingdom
postcoder.com
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Company Informationcharlymail
Founded: 2026
charlymail.com
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Alternatives |
Alternatives |
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Categories |
Categories |
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Address Verification Features
Address Validation
Autocomplete
Automatic Formatting
Data Cleansing
Data Discovery
Data Quality Control
Data Verification
Geographic Maps
Geolocation
Metadata Management
Reporting / Analytics
Search / Filter
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Integrations
C#
CSS
Contact Form 7
Divi
Elementor
Formidable Forms
Forminator
Gravity Forms
Gutenberg Technology
HTML
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Integrations
C#
CSS
Contact Form 7
Divi
Elementor
Formidable Forms
Forminator
Gravity Forms
Gutenberg Technology
HTML
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