Our Email Verifier API protects your sender reputation and eliminates bounces with a real-time 16-point verification engine. Built for developers and businesses who demand 98% accuracy and deep lead intelligence.
From a single real-time lookup to bulk list cleaning, our email verification API gives developers and businesses one accurate, deliverability-boosting endpoint for every workflow.
Browser-based tool to check email addresses one at a time with a detailed health report.
Verify EmailUpload .CSV spreadsheets to clean entire databases in minutes.
Clean Email ListIntegrate our RESTful API endpoint into your sign-up forms for instant validation.
API DocumentationEvery email request undergoes a rigorous 16-stage inspection. We don't just check if the mail exists; we analyze the health, risk, and intent of every address to maximize your ROI.
Verifies RFC compliance to catch typos and invalid formatting instantly.
Pings the mail server in real-time to confirm the mailbox actually exists.
Confirms the domain has valid mail exchange records to receive messages.
Verifies the domain is active and correctly configured on the global internet.
Identifies honeypots and blacklisted addresses before they hit your sender score.
Flags users known for marking emails as spam to keep you off global blacklists.
Detects temporary server defenses so you can manage retry logic efficiently.
Identifies accounts at capacity that will result in immediate hard bounces.
Detects domain misspellings and suggests the correct email in real-time.
Block disposable email services used to bypass trials and commit fraud.
Flags info@ or sales@ to help you prioritize personal professional contacts.
Detects 'accept-all' domains to help you manage delivery uncertainty.
ML-powered detection of bot-generated keyboard smashes (e.g. asdf123@).
Flags profanity or high-risk keywords to ensure brand safety and compliance.
Instantly identifies Gmail/Yahoo vs. high-value corporate domain emails.
Identifies the host (Google, O365, etc.) for advanced list segmentation.
Curious about our accuracy? Use our Free Email Verifier Tool to run a real-time test on any address. Get a detailed report on SMTP health, MX records, and infrastructure risk without writing a single line of code.
<?php
// Set the API key and email to be validated
$apiKey = 'YOUR-API-KEY';
$email = 'example@email.com';
// Use curl to make the request
$url = 'https://emailverifierapi.com/v2/?apiKey='.$apiKey.'&email='.urlencode($email);
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
$response = curl_exec($ch);
curl_close($ch);
// Decode the JSON response
$json = json_decode($response, true);
// Handle the result
if($json['status'] == 'failed'){
// Alert user or flag invalid email
}
?>
Certified global standards for information security management and data protection.
Independently audited for security, availability, and confidentiality across all systems.
Full compliance with EU and CA privacy laws. Automated data deletion and DPA ready.
"Verification cleaned webinar signups. Attendance rates improved and reminder emails actually land."
"Stopped bots and typo emails from polluting HubSpot. Our data quality improved overnight."
"Reduced cart-abandonment follow-ups bouncing. Our automations finally reach paying customers."
An email verifier API is a tool developers call to check, in real time, whether an email address is valid, active, and safe to send to—without any manual effort. You send an address to our endpoint and instantly receive its deliverability status. Our Email Verifier API runs each address through a 16-point engine—including syntax, MX record, and live SMTP checks—so you can block invalid sign-ups and protect your sender reputation.
It works in three core stages. First, syntax validation confirms the address is correctly formatted under the RFC 5322 standard. Next, an MX record lookup verifies the domain is configured to receive mail. Finally, a real-time SMTP handshake checks the mailbox itself without sending an email. Our API layers 13 additional checks on top—spam traps, disposables, catch-all detection, and more—returning a complete result in milliseconds.
Our 16-point engine provides 98% accuracy. By performing real-time SMTP "handshakes" rather than relying on stale databases, we ensure your sender reputation remains pristine.
Yes. Every new account receives 100 free credits instantly—no credit card required. You can test our API, Bulk Cleaner, or Single Verifier immediately.
Our global infrastructure is built for speed. Most single email verifications are processed in under 50ms, ensuring zero lag for your sign-up forms.
Yes. We identify "Accept-All" servers that return a positive result for any alias. We flag these specifically so you can manage delivery uncertainty.
Absolutely. We are ISO 27001 and SOC 2 Type II certified. Data is processed in real-time and never stored after the check is complete.
Yes. You can verify lists directly within Microsoft Excel and Google Sheets using our API, allowing you to clean data without leaving your spreadsheet.
Yes. Beyond our API, we support seamless .CSV uploads that are fully compatible with HubSpot, Salesforce, Pipedrive, and other major CRMs.
No. Purchased credits never expire. Whether you use them today or a year from now, your balance remains available until you've used every last verification.