▣ COMMUNICATIONS · DATA VALIDATION

Advanced Email Verification API

What it does

Email Verification checks whether an email address is valid and returns a result envelope with a numeric code and a success flag. Send an email in the query string and use the response to gate signups, clean contact lists, or reduce bad addresses before you send mail.

Use Email Verification when you need a lightweight validation step in a registration flow, lead form, CRM import, or bulk list cleanup job. It fits into systems that want a fast pass/fail check without pulling in a larger identity or enrichment workflow.

The request schema is minimal: one email field. The response schema guarantees a standard wrapper, and the service include additional module blocks alongside code and success. That makes it easy to check the outcome while still leaving room for extra response details when they are available.

If you already validate email format at the edge, Email Verification gives you a second check before you store, message, or synchronise the address downstream.

GET

Email Verification

https://api.eu.apyhub.com/quadlem/email-verification

QUICKSTART

GUIDE

Quickstart

Use the following request to validate an email address and retrieve deliverability, domain, and fraud risk information.

curl -X GET "https://api.eu.apyhub.com/quadlem/[email protected]" \
  -H "apy-token: $APY_TOKEN"

What you'll get back

A successful request returns details about the email address, including its validity, deliverability, domain information, mail server status, and an overall risk assessment.

{
  "success": true,
  "code": 200,
  "EMAIL": {
    "email": "[email protected]",
    "domain": "example.com",
    "valid": true,
    "is_deliverable": true,
    "is_disposable": false,
    "is_role": false,
    "mx": {
      "found": true,
      "provider": "Google",
      "reputable": true
    },
    "risk_score": 0,
    "risk_level": "low",
    "recommendation": "accept",
    "summary": "This looks like a valid, deliverable email address with no risk indicators (0/100 — low risk). Recommended action: accept."
  }
}

Note: Depending on the email address and service configuration, the response may include additional validation and reputation signals to help assess email quality and fraud risk.

TRY ITLIVE · 40 ATOMS

API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Verifies an email address's syntax and deliverability, and flags disposable, role-based, free-provider, and catch-all addresses. Also checks MX records, domain age, and Gravatar presence, returning a fraud risk score and recommendation.

Query Parameter(s)

Attribute	Type	Mandatory	Description
email	String	Yes	Email address to verify. Must be a valid email format.

Response

Returns a JSON object with the request status and an EMAIL object covering syntax, deliverability, domain and MX checks, and an overall risk score with a recommendation.

Attribute	Type	Description
success	Boolean	Whether the request succeeded.
code	Integer	Numeric response code.
EMAIL	Object	Email verification result.
EMAIL.email / normalized	String	The address as submitted and normalized.
EMAIL.user / domain	String	Local part and domain of the address.
EMAIL.valid	Boolean	Overall validity (syntax + deliverability).
EMAIL.is_valid_syntax	Boolean	Whether the address is syntactically valid.
EMAIL.is_deliverable / deliverability	Boolean/String	Whether mail can be delivered, and the deliverability status.
EMAIL.is_disposable	Boolean	Whether it's from a disposable/temporary email provider.
EMAIL.is_role	Boolean	Whether it's a role address (e.g. `info@`, `support@`).
EMAIL.is_free_provider	Boolean	Whether it's from a free consumer email provider.
EMAIL.is_catch_all / catch_all	Boolean/Object	Whether the domain accepts all addresses (catch-all).
EMAIL.mx	Object	MX record lookup — found, provider, reputability, records.
EMAIL.gravatar	Object	Whether a Gravatar profile exists for this address.
EMAIL.domain_age	Object	Domain registration age and date.
EMAIL.breaches	Object	Known data-breach exposure, where checked.
EMAIL.reputation	Object	External reputation signal, where checked.
EMAIL.risk_score	Number	Overall fraud risk score.
EMAIL.risk_level	String	`low`, `medium`, or `high`.
EMAIL.recommendation	String	`accept`, `review`, or `reject`.
EMAIL.summary	String	Plain-language explanation of the result.
EMAIL.reasons	Array	Codes/messages explaining the risk drivers.

▣ COMMON ERRORS

Errors any endpoint can return

400bad_request

Required parameter missing or malformed body.

401unauthorized

API key missing, revoked, or not authorized for this service.

429rate_limited

Your plan's per-second rate exceeded. Retry with exponential backoff.

503upstream_busy

Backend temporarily unavailable. Try again in a few seconds.

Similar APIs

Closest matches in the catalog based on this service.

CALLEmail Syntax Validator APIDosvak LLC CALLEmail Validation API: Check Domains and Block Disposable EmailsApyHub CALLEmail Deliverability Score APIDosvak LLC CALLStudent & Academic Email Verification APIApyHub

From the blog

Reads that touch this API.

The Future of APIs: What to Expect in 2026 and BeyondAug 7, 2026 Email Validation API: How It Works + 7 Options ComparedSep 24, 2026 Advanced Email Validation using ApyHub’s API in NodeJSJul 9, 2026 The Importance of Email Validation for Data AccuracyAug 7, 2026