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Email Verifier

Hunter

Verify an email address and return deliverability, confidence and risk signals.

Capability
Email verification
Current price
$0.0154/verification
Availability
Ready to run
Last accepted verification
Not available

What this API does

Verify one email and return Hunter's status, score, SMTP checks, and public sources. Unknown and disposable results consume no Hunter verification credit and capture zero.

Agents select this operation with tool ID hunter.email-verifier, then inspect its current executable contract before a run.

Public input and output shape

Input

emailstring · required

Email address used as the lookup or verification target.

format: email

Output

_deprecation_noticestring

Returned deprecation notice value.

accept_allboolean

Returned accept all value.

blockboolean

Returned block value.

disposableboolean

Returned disposable value.

emailstring

Email address used as the lookup or verification target.

gibberishboolean

Returned gibberish value.

mx_recordsboolean

Returned mx records value.

regexpboolean

Returned regexp value.

resultstring

Returned result value.

scorenumber

Returned score value.

smtp_checkboolean

Returned smtp check value.

smtp_serverboolean

Returned smtp server value.

sourcesarray

Returned sources value.

statusstring

Returned status value.

webmailboolean

Returned webmail value.

Example request and output

This reviewed worked example is shared with inspect. Inspect also returns the current executable schema and price estimate before a paid run.

Request

{
  "tool_id": "hunter.email-verifier",
  "input": {
    "email": "support@hunter.io"
  }
}

Output

{
  "block": false,
  "email": "support@hunter.io",
  "score": 100,
  "regexp": true,
  "result": "deliverable",
  "status": "valid",
  "sources": [
    {
      "uri": "https://thesmbguide.com/hunter-reviews",
      "domain": "thesmbguide.com",
      "extracted_on": "2021-11-01",
      "last_seen_on": "2026-07-04",
      "still_on_page": true
    },
    {
      "uri": "https://university.mindstudio.ai/building-ai-agents/blocks-reference/enrich-company-via-domain",
      "domain": "university.mindstudio.ai",
      "extracted_on": "2026-07-01",
      "last_seen_on": "2026-07-01",
      "still_on_page": true
    },
    {
      "uri": "https://hunter.io/api-documentation/v2",
      "domain": "hunter.io",
      "extracted_on": "2025-01-25",
      "last_seen_on": "2026-06-29",
      "still_on_page": true
    },
    {
      "uri": "https://pickplugins.com/hunter-bulk-email-verifier-alternatives",
      "domain": "pickplugins.com",
      "extracted_on": "2025-06-21",
      "last_seen_on": "2026-06-28",
      "still_on_page": true
    },
    {
      "uri": "https://bugbounty.fr/listing/hunter-io",
      "domain": "bugbounty.fr",
      "extracted_on": "2025-01-31",
      "last_seen_on": "2026-06-22",
      "still_on_page": true
    },
    {
      "uri": "https://hunter.io/api-documentation",
      "domain": "hunter.io",
      "extracted_on": "2025-03-20",
      "last_seen_on": "2026-06-21",
      "still_on_page": true
    },
    {
      "uri": "https://infopreneur.blog/hunter-io-login",
      "domain": "infopreneur.blog",
      "extracted_on": "2024-11-24",
      "last_seen_on": "2026-06-07",
      "still_on_page": true
    },
    {
      "uri": "https://hunter.io/api/v2/docs",
      "domain": "hunter.io",
      "extracted_on": "2025-02-14",
      "last_seen_on": "2026-05-15",
      "still_on_page": true
    },
    {
      "uri": "https://api.hunter.io/api/v2/docs",
      "domain": "api.hunter.io",
      "extracted_on": "2025-05-01",
      "last_seen_on": "2025-05-01",
      "still_on_page": false
    }
  ],
  "webmail": false,
  "gibberish": false,
  "accept_all": false,
  "disposable": false,
  "mx_records": true,
  "smtp_check": true,
  "smtp_server": true,
  "_deprecation_notice": "Using result is deprecated, use status instead"
}
Teaching errors and limitations
  • invalid_input: email must be a valid addressexample: {"email":"support@hunter.io"}
  • verification_pending: Hunter is still checking the remote mail server.The wallet was not charged; retry the same input shortly.
Updated
18 August 2026

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