Email validation API

Email address validation

Postcoder checks and validates email addresses in real-time as soon as they're typed into your form. Block incorrect or fraudulent signups, and capture real and deliverable email addresses from genuine customers.

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- Result Valid email address
- Valid
- Score 100
- Email address ada@example.com

Trusted by leading organisations worldwide

How does the Postcoder email validation API work?

Your customer enters their email address on your form
Postcoder email validation is easy to integrate into the existing user-input forms on your website or app.
Postcoder validates the email address in real-time
Postcoder performs a range of live checks to verify the email address can actually receive email.
You capture a valid email address every time
Postcoder lets you know whether the email is valid, and highlights typos and disposable domains.

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Why use Postcoder for email validation?

Reduce bogus accounts
Eliminate fake, invalid or temporary email addresses from being used to create bogus accounts.
Minimise funnel leaks
Avoid losing leads or customers at registration due to accidental typos in their email address.
Stay connected
Ensure your customers get the emails they want from you by validating their email address.

Improve checkout times
Don't make your customers type their email address twice. Validation helps them complete your form faster.
Increase email deliverability
Enhance your sender reputation and improve deliverability rates by eliminating hard bounces.
Reduce support overhead
Decrease admin time spent following up with customers who missed your important email.

An optimised developer experience

Integrate email validation in minutes with Postcoder's REST API, sample code and developer-friendly documentation.

{
	"state":"Success",
	"valid":true,
	"score":"83",
	"processtime":"87"
}

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Having Postcoder on our checkout page has really helped ... Customers spend much less time adding their details which in turn made for a much more pleasant transaction.
Alex Woods Digital Marketing Executive at Victorian Plumbing

Free support

Postcoder is supported by our own team of experts that specialise in email validation, data quality, usability, privacy and technical integration. When you choose Postcoder, our team is your team and we're here for you if you need us, at no extra cost.

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Tracking usage

Understanding how your account is being used is important, so we make it easy for you. You can view usage reports, configure email alerts and check your remaining credit balance.

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