Email Validation and Verification API

Improve your delivery rate and clean your email lists with Abstract's industry-leading email verification API
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API benefits

Real-time MX & SMTP check
Typo checking and smart suggestion
Disposable and free email providers check
Privacy friendly (GDPR, CCPA)
The world’s best engineering teams run on Abstract
4.8 from 1,863 votes

Built for developers
by developers

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A global architecture that ensures fast, reliable, and redundant service with industry-standard data sovereignty and privacy.
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Whether you have 10 or 10,000 requests per second, we’re ready for you.
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Milliseconds matter. We obsess about every single one of them in a response.
Built for reliable uptime
Every minute of uptime counts. That’s why public companies, financial institutions, airlines, governments, and more trust us in production.

Get into production
this afternoon

Customer-obsessed technical support
Everything you need to get live and stay that way. Fast, responsive, and friendly support from developers.  24/7 via email, chat, and phone.
Integrate with your stack
Abstract integrates with the tools you already use, from cloud and analytics platforms to low code tools to ERPs, CRMs, and more.
Zapier
Zapier
Splunk
Splunk
Snowflake
Snowflake
Shopify
Shopify
Salesforce
Salesforce
Pipedream
Pipedream
Pardot
Pardot
Openprice
Openprice
NetSuite
NetSuite
Marketo
Marketo
Make
Make
Mailchimp
Mailchimp
Magento
Magento
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Hubspot
GCP
GCP
Databricks
Databricks
Azure
Azure
AWS
AWS
World-class docs and SDKs
We obsess over “time to first production request”. That’s why we provide a ton of code samples, libraries, and SDKs to get you started quickly.
Ready for the enterprise
Compliance is at our core. We’re committed to industry-standard security and privacy frameworks, like SOC 2 and GDPR.
SOC 2
Type II
GPDR
Ready
99.99%
uptime SLA
For more information check our

The Email Validation and Verification API ensures you have clean and reliable email lists

Weekly updates
Disposable email detection
Screen against 3,000+ disposable domains. Updated weekly.
Daily updates
High risk, low reputation domain alerts
Extensive domain monitoring and analysis. Updated daily.
Daily updates
Industry-leading risk & quality score
Easily decision each email with a trusted quality score.
Smart learning at scale
3B+ validations + proprietary ML models = industry-leading accuracy.
Real-time SMTP verification
The gold-standard in deliverability, returned in <50 milliseconds.
Daily updates
Real-time MX checks
Speedy verification of MX records ensures deliverability.
Daily updates
Toxic domain detection
Avoid domains with spam and abuse that hurt deliverability. Updated daily.
Typo detection & smart suggestions
Catch common typos and suggest changes to improve conversion.
Monthly updates
Free email detection
Screen users from an extensive list of free email providers.
Catch-all email detection
Know where your emails are going with robust catch-all detection.
Weekly updates
Spam trap filters
Protect your domain’s reputation by identifying spam traps.
Role detection
Flag role emails (sales@, info@) to identify email quality.
Weekly updates
Greylist monitoring
Minimize unknowns and maximize deliverability with proprietary anti-greylist tech.
Monthly updates
Syntax validation
Robust syntax validation, accounting for thousands of edge cases.
Bulk operations
Save time with powerful bulk validations via API.
Multiple API keys & test environments
Manage access and usage with multiple API keys
Get your free
Email Validation API
key now
4.8 from 1,863 votes
See why the best developers build on Abstract
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Email validation API
that works where you do
Salesforce
AWS
Zapier
GCP
Hubspot
Azure

Simple and transparent pricing

Free

$0
  • 100 requests
  • 1 request / second

Standard

$
99/ month
0
  • 60,000
    requests / year
  • 3
    requests / second

Enterprise

Custom
A plan based on your specific
needs
  • A plan based on your specific needs
  • 99.99% uptime SLA
  • SSO/AML login
  • 24/7 support via email, chat and phone
  • Technical onboarding support, account manager

Free

$0
  • 100 requests
  • 1 request / second

STANDARD

$99/ month
  • 60,000
    requests / month
  • 3
    requests / second

Enterprise

Custom
A plan based on your specific
needs
  • A plan based on your specific needs
  • 99.99% uptime SLA
  • SSO/AML login
  • 24/7 support via email, chat and phone
  • Technical onboarding support, account manager

Billed monthly

Billed yearly

The best build
on Abstract

Spammy signs up were an issue for us for a while, and we struggled to come up with the best way to identify all the variations in bad emails we were getting. Thankfully we found and quickly integrated with Abstract's email validation API, which saved us a bunch of time and gave us peace of mind.
Chris Stanley, Scope
Enterprise ready
Abstract comes with security, compliance, and reliability built into the core. That’s why the Fortune 500, governments, and businesses in critical industries like financial services, healthcare, and airlines trust us.
99.99% uptime SLA
SSO/AML login
24/7 support via email, chat, and phone
Technical onboarding support
Dedicated account manager

Email Validation and Verification API Changelog

Updated documentation and migrated to a new provider: https://docs.abstractapi.com/email-validation

July 4, 2023

Improved accuracy of email validation by 20%

May 30, 2023

Improved response time by 27%

February 26, 2021

Check our API Guides

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FAQ about Abstract's
Email validation API

What is the email verification API?

The Abstract email verification API takes an email address and identifies whether it is valid or not, and how risky we think it will be. This real-time or asynchronous capability will help you detect and suppress any invalid or disposable email addresses, which will help clean your email list, reduce your bounce rate, and thus improve your email delivery rate for legitimate users. Email verification is especially powerful when combined with tools like the IP geolocation API and / or the phone number validation API to provide simple checks for new users.

What kind checks does the email verification API do?

Abstract's email verification API uses a variety of increasingly sophisticated and frequently updated techniques to ensure you suppress all invalid or risky emails. These techniques include (but are not limited to): checking for syntax errors and typos in the email address (e.g., john@gnamil.com), doing real time SMTP and MX record checks against the email's domain, performing a sophisticated regular expression (regex) check on the email, and using a variety of other filters backed by machine learning to detect invalid or risky emails.

What other options does the email validation API provide for filtering?

We can also identify and flag other characteristics of an email, such as whether it's from a free email provider (such as Yahoo or Gmail), whether it's from a disposable email services (such as Yopmail), and whether it's from a 'role' email address (such as team@ or @sales@).

We can also help you identify emails that are from recently registered domains, even if those domains otherwise past other filters. Recently registered domains and emails can signal that the user is fraudulent, spammy, or in some other way needs to be reviewed.

Get your free
Email Validation API
key now
4.8 from 1,863 votes
See why the best developers build on Abstract
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