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Use the power of Hunter anywhere through simple API calls. Get started in minutes.
See the documentation

We strongly believe the most efficient way to distribute a service is to start with an API. The main requests on Hunter can be made using simple API calls integrated wherever you need. Thousands of businesses have already integrated Hunter’s API to find and verify email addresses.

Getting started

Domain Search
Email Finder
Email Verifier
The Email Finder requires the name of a person and a domain name. It returns the professional email of this person and a confidence score.
See the documentation GET https://api.hunter.io/v2/email-finder?domain=asana.com&first_name=Dustin&last_name=Moskovitz
{
  "data" : {
    "email": "dustin@asana.com",
    "score": 72,
    "domain": "asana.com",
    "sources": [
      {
        "domain" : "blog.asana.com",
        "uri" : "http://blog.asana.com",
        "extracted_on" : "2015-09-27"
        }
      ],
    }
  },
  "meta" : {
    "params" : {
      "first_name" : "Dustin",
      "last_name" : "Moskovitz",
      "domain" : "asana.com",
      "company" : null
    }
  }
}

The Email Verifier requires an email address. It returns the result of the verification to know if this email address is deliverable or not, with the detailed validations made and a confidence score.
See the documentation GET https://api.hunter.io/v2/email-verifier?email=steli@close.io
{
  "data" : {
    "result": "deliverable",
    "score": 91,
    "regexp": true,
    "gibberish": false,
    "disposable": false,
    "webmail": false,
    "mx_records": true,
    "smtp_server": true,
    "smtp_check": true,
    "accept_all": false,
    "sources": [
      {
        "domain": "blog.close.io",
        "uri": "http://blog.close.io/how-to-become-great-at-sales",
        "extracted_on": "2015-01-26"
      },
      {
        "domain": "blog.close.io",
        "uri": "http://blog.close.io/how-to-do-referral-sales",
        "extracted_on": "2015-01-26"
      }
    ]
  },
  "meta" : {
    "params" : {
      "email" : "steli@close.io"
    }
  }
}