Products
Products
CORE
Bulk email address list checking that's safe and easy
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An email validation API that delivers a dazzling array of results
ASSESS
Fraud prevention in real-time at sign-up
WHOIS
Structured domain age data that's consistent and system integration ready
Solutions
By Role
Data enrichment
Marketing
Developer
Selling online
By Issue
Old email addresses on lists
Online fraud
I want to add value to my data
Too many bounce backs
People use bad email addresses
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Why choose us
Our story
Team
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Working with your data
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Products
CORE
MORE
ASSESS
WHOIS
By Role
Data enrichment
Marketing
Developer
Selling online
By Issue
Old email addresses on lists
Online fraud
I want to add value to my data
Too many bounce backs
People use bad email addresses
Resources
Integrations
Technical resources
Service status
Support
Case studies
Resources
Blog
Why choose us
Why choose us
Our story
Team
Vacancies
Compliance
Compliance
Website terms of use
Terms of service
Being good neighbours
Working with your data
Contact
Sign Up
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Resources
Articles, links to technical documentation and support
The latest from our blog
How to verify emails with your WordPress contact form plugin
Read on...
Interview with Cybernews: "There's a wide spectrum of threats where a fake email address could be a red flag”
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How email engagement affects your email deliverability
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View Our Blog
Got a problem? Here's our 24/7 support. Read our articles or open a ticket.
GET HELP
Case Studies
Email verification works to detect that 1 in 5 sign-ups are toxic.
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Improving the insurance claims process.
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How does email validation play a part in helping Greenpeace make the world a better place?
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View Case Studies
Looking for APIs and technical information? Read the docs.
More API on GitHub
WHOIS API on GitHub
Uptime on Status Page
Auth0 integration
