Overview
Abstract API Email Validation checks whether an email address is deliverable, properly formatted, and not from a disposable or spam-trap domain. It performs DNS MX record checks, SMTP verification, and syntax analysis to give a multi-signal verdict without actually sending an email. An API key from abstractapi.com is required; a free tier with limited monthly checks is available.
Beginner Tip
Email validation APIs are useful when building sign-up forms — they catch typos and fake addresses before they enter your database. You need an API key from abstractapi.com; the free tier is generous enough for small projects and testing.
Available Data
Example Response
{
"message_id": "msg_abc123def456",
"status": "delivered",
"to": "[email protected]",
"subject": "Welcome!",
"timestamp": "2025-01-15T10:30:00Z"
} Field Reference
email The email address that was submitted for validation deliverability Overall deliverability verdict: DELIVERABLE, UNDELIVERABLE, or RISKY is_valid_format Contains a boolean value field indicating whether the email passes RFC 5321 syntax rules is_mx_found Contains a boolean value field indicating whether a valid MX record was found for the email domain is_disposable_email Contains a boolean value field flagging known temporary or throwaway email providers quality_score A 0.0–1.0 score summarizing overall email quality and deliverability likelihood Implementation Example
const url = "https://www.abstractapi.com/email-verification-validation-api";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
Alternatives to Email Validation
Technical alternatives for different use cases.
Specialized in detecting disposable email addresses
Blocking temporary/disposable email signups
Full email deliverability checking
Email validation with SMTP check and catch-all detection
Deep validation with SMTP verification
Free tier availability
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