Hunter API

Build powerful, automated email outreach workflows.

Hunter's API is robust and reliable. Get started in minutes.

Automate your search for valid email addresses.

Using the Domain Search API, you can fetch all email addresses Hunter found for a given domain. All you need is the domain name and a simple API call.

Domain Search API

Start with a person’s name and a domain name, and get a professional email in the payload. The Email Finder API also returns a confidence score and additional information about the returned email address.

Email Finder API

Using the Email Verifier API, you can programmatically verify the validity of an email address. With each verified email, you also get a confidence score.

Email Verifier API

GET
https://api.hunter.io/v2/domain-search?domain=intercom.com
200 OK
{
  "data": {
    "domain": "intercom.com",
    "disposable": false,
    "webmail": false,
    "accept_all": true,
    "pattern": "{first}",
    "organization": "Intercom",
    "description": "Faster resolutions, higher CSAT, and lighter support volumes with the only platform to combine the power of automation and human customer support.",
    "industry": "Software Development",
    "twitter": null,
    "facebook": null,
    "linkedin": null,
    "instagram": null,
    "youtube": null,
    "technologies": ["amazon-web-services", "facebook", "intercom", "marketo", "node-js", "react", "recaptcha", "sentry"],
    "country": null,
    "state": null,
    "city": null,
    "postal_code": null,
    "street": null,
    "headcount": "501-1000",
    "emails": [
      {
        "value": "ciaran@intercom.com",
        "type": "personal",
        "confidence": 92,
        "sources": [
          {
            "domain": "github.com",
            "uri": "http://github.com/ciaranlee",
            "extracted_on": "2015-07-29",
            "last_seen_on": "2017-07-01",
            "still_on_page": true
          },
          {
            "domain": "blog.intercom.com",
            "uri": "http://blog.intercom.com/were-hiring-a-support-engineer/",
            "extracted_on": "2015-08-29",
            "last_seen_on": "2017-07-01",
            "still_on_page": true
          },
          ...
        ],
        "first_name": "Ciaran",
        "last_name": "Lee",
        "position": "Support Engineer",
        "seniority": "senior",
        "department": "it",
        "linkedin": null,
        "twitter": "ciaran_lee",
        "phone_number": null,
        "verification": {
          "date": "2019-12-06",
          "status": "valid"
        }
      },
      ...
    ],
    "linked_domains": []
  },
  "meta": {
    "results": 35,
    "limit": 10,
    "offset": 0,
    "params": {
      "domain": "intercom.com",
      "company": null,
      "type": null,
      "seniority": null,
      "department": null
    }
  }
}

GET
https://api.hunter.io/v2/email-finder?domain=reddit.com&first_name=Alexis&last_name=Ohanian
200 OK
{
  "data": {
    "first_name": "Alexis",
    "last_name": "Ohanian",
    "email": "alexis@reddit.com",
    "score": 97,
    "domain": "reddit.com",
    "accept_all": false,
    "position": "Cofounder",
    "twitter": null,
    "linkedin_url": null,
    "phone_number": null,
    "company": "Reddit",
    "sources": [
      {
        "domain": "redditblog.com",
        "uri": "http://redditblog.com/2008/10/22/widgets-get-an-upgrade-and-a-firefox-extension-that-will-rock-your-world",
        "extracted_on": "2018-10-19",
        "last_seen_on": "2021-05-18",
        "still_on_page": true
      },
      ...
    ],
    "verification": {
      "date": "2021-06-14",
      "status": "valid"
    }
  },
  "meta": {
    "params": {
      "first_name": "Alexis",
      "last_name": "Ohanian",
      "full_name": null,
      "domain": "reddit.com",
      "company": null,
      "max_duration": null
    }
  }
}

GET
https://api.hunter.io/v2/email-verifier?email=patrick@stripe.com
200 OK
{
  "data": {
    "status": "valid",
    "result": "deliverable",
    "_deprecation_notice": "Using result is deprecated, use status instead",
    "score": 100,
    "email": "patrick@stripe.com",
    "regexp": true,
    "gibberish": false,
    "disposable": false,
    "webmail": false,
    "mx_records": true,
    "smtp_server": true,
    "smtp_check": true,
    "accept_all": false,
    "block": false,
    "sources": [
      {
        "domain": "beta.paganresearch.io",
        "uri": "http://beta.paganresearch.io/details/stripe",
        "extracted_on": "2020-06-17",
        "last_seen_on": "2020-06-17",
        "still_on_page": true
      },
      {
        "domain": "icloudnewz.blogspot.com",
        "uri": "http://icloudnewz.blogspot.com/2017/11/follow-patrick-collison-mike-birbiglia.html",
        "extracted_on": "2020-03-25",
        "last_seen_on": "2020-06-29",
        "still_on_page": true
      }
    ]
  },
  "meta": {
    "params": {
      "email": "patrick@stripe.com"
    }
  }
}

Manage your leads and campaigns.

The Leads API lets you control the leads you store in Hunter, including fetching, adding, or deleting leads.

Leads API

The Campaigns API allows you to review your campaigns and add or remove campaign recipients.

Campaigns API

GET
https://api.hunter.io/v2/leads
200 OK
{
  "data": {
    "leads": [
      {
        "id": 1,
        "email": "hoon@stripe.com",
        "first_name": "Jeremy",
        "last_name": "Hoon",
        "position": null,
        "company": "Stripe",
        "company_industry": null,
        "company_size": null,
        "confidence_score": null,
        "website": "stripe.com",
        "country_code": null,
        "source": null,
        "linkedin_url": null,
        "phone_number": null,
        "twitter": null,
        "sync_status": null,
        "notes": null,
        "sending_status": null,
        "last_activity_at": null,
        "last_contacted_at": null,
        "verification": {
          "date": "2021-01-01 12:00:00 UTC",
          "status": "deliverable"
        },
        "leads_list": {
          "id": 1,
          "name": "My leads list",
          "leads_count": 2
        },
        "created_at": "2021-01-01 12:00:00 UTC"
      },
      {
        "id": 2,
        "email": "alexis@reddit.com",
        "first_name": "Alexis",
        "last_name": "Ohanian",
        "position": "Cofounder",
        "company": "Reddit",
        "company_industry": null,
        "company_size": null,
        "confidence_score": 97,
        "website": "reddit.com",
        "country_code": "US",
        "source": null,
        "linkedin_url": null,
        "phone_number": null,
        "twitter": null,
        "sync_status": null,
        "notes": null,
        "sending_status": null,
        "last_activity_at": null,
        "last_contacted_at": null,
        "verification": {
          "date": "2021-01-01 12:00:00 UTC",
          "status": "deliverable"
        },
        "leads_list": {
          "id": 1,
          "name": "My leads list",
          "leads_count": 2
        },
        "created_at": "2021-01-01 12:00:00 UTC"
      }
    }
  },
  "meta": {
    "count": 2,
    "total": 2,
    "params": {
      "limit": 20,
      "offset": 0
    }
  }
}

GET
https://api.hunter.io/v2/campaigns/1/recipients
200 OK
{
  "data": {
    "recipients": [
      {
        "email": "hoon@stripe.com",
        "first_name": "Jeremy",
        "last_name": "Hoon",
        "position": null,
        "company": "Stripe",
        "website": "stripe.com",
        "sending_status": "pending",
        "lead_id": 1
      },
      {
        "email": "alexis@reddit.com",
        "first_name": "Alexis",
        "last_name": "Ohanian",
        "position": "Cofounder",
        "company": "Reddit",
        "website": "reddit.com",
        "sending_status": "pending",
        "lead_id": 2
      }
    ]
  },
  "meta": {
    "limit": 20,
    "offset": 0
  }
}

Enrich your lead data with 100+ attributes

Turn an email address into a complete profile with job title, location, social handles, and more.

Lead Enrichment API

Turn a website address into a list of email addresses and details about the company, including location, industry, keywords, technologies, and more.

Company Enrichment API

Turn an email address into a fully enriched record about the associated company.

Combined Enrichment API

Our API is a one-to-one replacement to Clearbit for enrichment, and offers unmatched data quality.

Clearbit Replacement API

GET
https://api.hunter.io/v2/people/find?email=matt@hunter.io
200 OK
{
  "data": {
    "id": "b3ae14fb-6725-56d1-ac68-a76f8ce04dec",
    "name": {
      "fullName": "Matthew Tharp",
      "givenName": "Matthew",
      "familyName": "Tharp"
    },
    "email": "matt@hunter.io",
    "location": "Framingham, Massachusetts, United States",
    "timeZone": "America/New_York",
    "utcOffset": -5,
    "geo": {
      "city": "Framingham",
      "state": "Massachusetts",
      "stateCode": "MA",
      "country": "United States",
      "countryCode": "US",
      "lat": 42.27926,
      "lng": -71.41617
    },
    "bio": null,
    "site": null,
    "avatar": null,
    "employment": {
      "domain": "hunter.io",
      "name": "Hunter",
      "title": "Chief Executive Officer",
      "role": "executive",
      "subRole": null,
      "seniority": "executive"
    },
    "facebook": {
      "handle": null
    },
    "github": {
      "handle": null,
      "id": null,
      "avatar": null,
      "company": null,
      "blog": null,
      "followers": null,
      "following": null
    },
    "twitter": {
      "handle": "matttharp",
      "id": null,
      "bio": null,
      "followers": null,
      "following": null,
      "statuses": null,
      "favorites": null,
      "location": null,
      "site": null,
      "avatar": null
    },
    "linkedin": {
      "handle": "matttharp"
    },
    "googleplus": {
      "handle": null
    },
    "gravatar": {
      "handle": null,
      "urls": [],
      "avatar": null,
      "avatars": []
    },
    "fuzzy": false,
    "emailProvider": "google.com",
    "indexedAt": "2025-01-07",
    "phone": null,
    "activeAt": "2025-01-07",
    "inactiveAt": null
  },
  "meta": {
    "email": "matt@hunter.io"
  }
}

GET
https://api.hunter.io/v2/companies/find?domain=stripe.com
200 OK
{
  "data": {
    "id": "c60603a0-001c-5ca3-86a2-c571c6d43c25",
    "name": "Stripe",
    "legalName": "Stripe",
    "domain": "stripe.com",
    "domainAliases": [],
    "site": {
      "phoneNumbers": [
        "+1 555 555 5555"
      ],
      "emailAddresses": […]
    },
    "category": {
      "sector": "Information Technology",
      "industryGroup": "Software & Services",
      "industry": "Internet Software & Services",
      "subIndustry": "Internet",
      "gicsCode": "45103010",
      "sicCode": "36",
      "sic4Codes": [
        "73"
      ],
      "naicsCode": "51",
      "naics6Codes": [
        "519130"
      ],
      "naics6Codes2022": [
        "519290"
      ]
    },
    "tags": [
      "payment processing",
      "fintech",
      "online payments",
      "financial technology"
    ],
    "description": "Stripe is a fintech company that specializes in online payment processing services.",
    "foundedYear": 2010,
    "location": "South San Francisco, California, United States",
    "timeZone": "America/Los_Angeles",
    "utcOffset": -8,
    "geo": {
      "streetNumber": null,
      "streetName": null,
      "subPremise": null,
      "streetAddress": null,
      "city": "South San Francisco",
      "postalCode": null,
      "state": "California",
      "stateCode": "CA",
      "country": "United States",
      "countryCode": "US",
      "lat": 37.65466,
      "lng": -122.40775
    },
    "logo": "https://logo.clearbit.com/stripe.com",
    "facebook": {
      "handle": "175383762511776",
      "likes": null
    },
    "linkedin": {
      "handle": "company/stripe"
    },
    "twitter": {
      "handle": "stripe",
      "id": null,
      "bio": null,
      "followers": null,
      "following": null,
      "location": null,
      "site": null,
      "avatar": null
    },
    "crunchbase": {
      "handle": null
    },
    "emailProvider": "google.com",
    "type": "private",
    "ticker": null,
    "identifiers": {
      "usEIN": null
    },
    "phone": "+1 555 555 5555",
    "metrics": {
      "alexaUsRank": null,
      "alexaGlobalRank": null,
      "trafficRank": "very_high",
      "employees": "10K-50K",
      "marketCap": null,
      "raised": null,
      "annualRevenue": null,
      "estimatedAnnualRevenue": null,
      "fiscalYearEnd": null
    },
    "indexedAt": "2024-10-16",
    "tech": [
      "adyen",
      "algolia",
      "amazon-s3",
      "amazon-web-services",
      "angular-js",
      "ansible",
      "aws-lambda",
      "babel",
      "backbone-js",
      "bash",
      "bootstrap",
      "c",
      "cassandra",
      "chef",
      "contentful",
      "css",
      "django",
      "dnn",
      "docker",
      "docusign",
      "elasticsearch",
      "elixir",
      "esbuild",
      "excel",
      "facebook",
      "git",
      "go",
      "go-js",
      "google-ads",
      "google-cloud-platform",
      "google-workspace",
      "grafana",
      "graphql",
      "highcharts",
      "hubspot",
      "java",
      "javascript",
      "jenkins",
      "jss",
      "kafka",
      "kotlin",
      "kubernetes",
      "linkedin",
      "marketo",
      "microsoft",
      "microsoft-azure",
      "microsoft-excel",
      "microsoft-office",
      "mindbody",
      "mongodb",
      "mysql",
      "net",
      "netsuite",
      "next-js",
      "nginx",
      "node-js",
      "nosql",
      "objective-c",
      "oracle",
      "paypal",
      "php",
      "plotly",
      "postgresql",
      "prometheus",
      "puppet",
      "puppeteer",
      "pyspark",
      "python",
      "react-js",
      "react-native",
      "redis",
      "render",
      "ruby",
      "rust",
      "salesforce",
      "salesforce-service-cloud",
      "salesloft",
      "sap",
      "scala",
      "sentry",
      "shopify",
      "spark",
      "splunk",
      "spring",
      "sql",
      "squarespace",
      "stripe",
      "temporal",
      "terraform",
      "twitter",
      "typescript",
      "unix",
      "vue-js",
      "websocket",
      "windows",
      "woocommerce",
      "xslt",
      "youtube",
      "zip",
      "zoominfo"
    ],
    "techCategories": [
      "accounting_and_finance",
      "advertising",
      "analytics",
      "appointment_scheduling",
      "authentication_services",
      "cloud_computing_services",
      "content_management_system",
      "crm",
      "data_enrichment_services",
      "data_management",
      "data_processing",
      "data_visualization",
      "database",
      "ecommerce",
      "image_video_services",
      "marketing_automation",
      "monitoring",
      "operating_system",
      "payment",
      "productivity",
      "programming_framework",
      "project_management_software",
      "sales_productivity",
      "site_search",
      "social_sharing",
      "web_hosting",
      "web_servers"
    ],
    "parent": {
      "domain": null
    },
    "ultimateParent": {
      "domain": null
    }
  },
  "meta": {
    "domain": "stripe.com"
  }
}

GET
https://api.hunter.io/v2/combined/find?email=sam@openai.com
200 OK
{
  "data": {
    "person": {
      "id": "c6effe25-565c-5a19-8193-674726000454",
      "name": {
        "fullName": "Sam Altman",
        "givenName": "Sam",
        "familyName": "Altman"
      },
      "email": "sam@openai.com",
      "location": null,
      "timeZone": null,
      "utcOffset": null,
      "geo": {
        "city": null,
        "state": null,
        "stateCode": null,
        "country": null,
        "countryCode": null,
        "lat": null,
        "lng": null
      },
      "bio": null,
      "site": null,
      "avatar": null,
      "employment": {
        "domain": "openai.com",
        "name": "OpenAI",
        "title": null,
        "role": null,
        "subRole": null,
        "seniority": null
      },
      "facebook": {
        "handle": null
      },
      "github": {
        "handle": null,
        "id": null,
        "avatar": null,
        "company": null,
        "blog": null,
        "followers": null,
        "following": null
      },
      "twitter": {
        "handle": "trustinyoon",
        "id": null,
        "bio": null,
        "followers": null,
        "following": null,
        "statuses": null,
        "favorites": null,
        "location": null,
        "site": null,
        "avatar": null
      },
      "linkedin": {
        "handle": null
      },
      "googleplus": {
        "handle": null
      },
      "gravatar": {
        "handle": null,
        "urls": [],
        "avatar": null,
        "avatars": []
      },
      "fuzzy": false,
      "emailProvider": "google.com",
      "indexedAt": "2025-01-10",
      "phone": null,
      "activeAt": "2025-01-15",
      "inactiveAt": null
    },
    "company": {
      "id": "5424e3b0-c75d-55b6-ad21-7a0fbbfcc7ad",
      "name": "OpenAI",
      "legalName": "OpenAI",
      "domain": "openai.com",
      "domainAliases": [],
      "site": {
        "phoneNumbers": [
          "+1 317 693 1781"
        ],
        "emailAddresses": […]
      },
      "category": {
        "sector": "Industrials",
        "industryGroup": "Commercial & Professional Services",
        "industry": "Professional Services",
        "subIndustry": "Research & Consulting Services",
        "gicsCode": "20202020",
        "sicCode": "87",
        "sic4Codes": [
          "87"
        ],
        "naicsCode": "54",
        "naics6Codes": [
          "541713"
        ],
        "naics6Codes2022": [
          "541715"
        ]
      },
      "tags": [
        "artificial intelligence",
        "machine learning",
        "technology",
        "research",
        "innovation"
      ],
      "description": "OpenAI is a technology company that specializes in artificial intelligence research and innovation.",
      "foundedYear": 2015,
      "location": "San Francisco, California, United States",
      "timeZone": "America/Los_Angeles",
      "utcOffset": -8,
      "geo": {
        "streetNumber": null,
        "streetName": null,
        "subPremise": null,
        "streetAddress": null,
        "city": "San Francisco",
        "postalCode": null,
        "state": "California",
        "stateCode": "CA",
        "country": "United States",
        "countryCode": "US",
        "lat": 37.77493,
        "lng": -122.41942
      },
      "logo": "https://logo.clearbit.com/openai.com",
      "facebook": {
        "handle": "openai.research",
        "likes": null
      },
      "linkedin": {
        "handle": "company/openai"
      },
      "twitter": {
        "handle": null,
        "id": null,
        "bio": null,
        "followers": null,
        "following": null,
        "location": null,
        "site": null,
        "avatar": null
      },
      "crunchbase": {
        "handle": null
      },
      "emailProvider": "google.com",
      "type": "partnership",
      "ticker": null,
      "identifiers": {
        "usEIN": null
      },
      "phone": "+1 317 693 1781",
      "metrics": {
        "alexaUsRank": null,
        "alexaGlobalRank": null,
        "trafficRank": "very_high",
        "employees": "1K-5K",
        "marketCap": null,
        "raised": null,
        "annualRevenue": null,
        "estimatedAnnualRevenue": null,
        "fiscalYearEnd": null
      },
      "indexedAt": "2024-10-16",
      "tech": [
        "adobe-analytics",
        "adobe-target",
        "amazon-web-services",
        "ansible",
        "auth0",
        "bash",
        "brightcove",
        "c",
        "chef",
        "cloudflare",
        "css",
        "datadog",
        "django",
        "docker",
        "elasticsearch",
        "excel",
        "flask",
        "go",
        "google-analytics",
        "google-cloud-platform",
        "google-workspace",
        "grafana",
        "graphql",
        "hubspot",
        "intercom",
        "java",
        "javascript",
        "jquery",
        "kafka",
        "kaltura",
        "kubernetes",
        "laravel",
        "microsoft-azure",
        "microsoft-excel",
        "mysql",
        "netsuite",
        "next-js",
        "node-js",
        "optimizely",
        "oracle",
        "plotly",
        "postgresql",
        "prometheus",
        "puppet",
        "python",
        "react-js",
        "redis",
        "rust",
        "salesforce",
        "sap",
        "scala",
        "shopify",
        "spark",
        "splunk",
        "sql",
        "stripe",
        "tailwind-css",
        "terraform",
        "typescript",
        "vercel",
        "vimeo",
        "windows",
        "wordpress",
        "youtube",
        "zip"
      ],
      "techCategories": [
        "accounting_and_finance",
        "analytics",
        "authentication_services",
        "cloud_computing_services",
        "content_management_system",
        "conversion_optimization",
        "crm",
        "customer_support",
        "data_processing",
        "data_visualization",
        "database",
        "dns",
        "ecommerce",
        "image_video_services",
        "monitoring",
        "operating_system",
        "payment",
        "productivity",
        "programming_framework",
        "web_hosting"
      ],
      "parent": {
        "domain": null
      },
      "ultimateParent": {
        "domain": null
      }
    }
  },
  "meta": {
    "email": "sam@openai.com"
  }
}

GET
https://api.hunter.io/v2/combined/find?email=matt@hunter.io&clearbit_format=true
200 OK
{
  "person": {
    "id": "b3ae14fb-6725-56d1-ac68-a76f8ce04dec",
    "name": {
      "fullName": "Matthew Tharp",
      "givenName": "Matthew",
      "familyName": "Tharp"
    },
    "email": "matt@hunter.io",
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    "gravatar": {
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    },
    "fuzzy": false,
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  },
  "company": {
    "id": "95ca56a8-a019-5c41-881e-293d9ca4741a",
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    "legalName": "Hunter",
    "domain": "hunter.io",
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    "site": {
      "phoneNumbers": [
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      ],
      "emailAddresses": […]
    },
    "category": {
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    "foundedYear": 2015,
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    "techCategories": [
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  }
}

My company, SparkToro, has used Hunter to power our contact data features for years. It’s not just that we love it; it’s that our customers do. Working with Hunter is easy, the data’s great, our customers are happy; what more could you ask for?

Rand Fishkin CEO at SparkToro

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Enrich your lead data with 100+ attributes

Lead Enrichment

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Clearbit Enrichment API replacement

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