> ## Documentation Index > Fetch the complete documentation index at: https://docs.tryhuntr.com/llms.txt > Use this file to discover all available pages before exploring further. # Reverse Email Lookup > Identify the person and employer behind a work email address. ## OpenAPI ````yaml /openapi.json post /reverse-email openapi: 3.0.3 info: title: Huntr — The GTM Intelligence API description: >- Give AI agents company, people, contact, and web intelligence through one API. Search accounts, build targeted lists, enrich leads, find contacts, and uncover buying signals. **Authentication:** Authenticated endpoints require an `x-api-key` header with your Huntr API key. Get a key by signing up via `POST /keys/create`. Public endpoints (pricing, sign-up, health) work without a key. **Rate limit:** 5 requests/second per API key on authenticated endpoints. version: 2.0.0 servers: - url: https://api.tryhuntr.com security: [] tags: - name: Contact APIs description: >- Search people and enrich work email, phone, and reverse-email contact fields. - name: Company APIs description: >- Search companies and retrieve company-level attributes such as detected technology stack and active job postings. - name: Research APIs description: >- Research one company, person, team, or focused business question and return a sales-ready answer. Lite, standard, and deep tiers. - name: LinkedIn APIs description: >- LinkedIn URL discovery, company and profile pages, posts, reactions, and comments. - name: X APIs description: X profiles, posts, search results, and thread context. - name: Web APIs description: >- Find, scrape, and analyze pages on a domain, plus tech stack, domain contacts, and job postings. - name: Account description: >- Sign up, verify email, recover keys, check balance, view usage, add credits, and read the public pricing matrix. - name: System description: Health check. paths: /reverse-email: post: tags: - Contact APIs summary: Reverse Email Lookup description: Identify the person and employer behind a work email address. requestBody: required: true content: application/json: schema: type: object required: - email properties: email: type: string format: email description: Work email address to look up. example: email: jane.doe@example.com responses: '200': description: Reverse email lookup complete. content: application/json: schema: type: object properties: success: type: boolean request_id: type: string result: type: object properties: status: type: string description: FOUND or NOT_FOUND. email: type: string first_name: type: string nullable: true last_name: type: string nullable: true title: type: string nullable: true phone: type: string nullable: true description: Employee phone when found. phone_type: type: string nullable: true description: Employee phone type when found. linkedin_url: type: string nullable: true email_verification_date: type: string nullable: true company_name: type: string nullable: true company_url: type: string nullable: true email_domain: type: string nullable: true company_linkedin_url: type: string nullable: true company_phone: type: string nullable: true industry: type: string nullable: true revenue: type: string nullable: true employee_count: type: string nullable: true address: type: string nullable: true city: type: string nullable: true region_code: type: string nullable: true zip: type: string nullable: true country_code: type: string nullable: true price: type: number description: Plan-specific amount when a match is found. credits_remaining: type: number required: - success - request_id - result - price - credits_remaining examples: found: summary: Match found value: success: true request_id: req_1746123456_re1x2y result: status: FOUND email: jane.doe@example.com first_name: Jane last_name: Doe title: Chief Executive Officer phone: +1-555-0123 phone_type: direct linkedin_url: https://linkedin.com/in/janedoe email_verification_date: '2024-01-15' company_name: Example Corp company_url: https://example.com email_domain: example.com company_linkedin_url: https://linkedin.com/company/example company_phone: +1-555-9999 industry: Software revenue: 10M-50M employee_count: 51-200 address: 123 Main St city: San Francisco region_code: CA zip: '94105' country_code: US price: 0.0075 credits_remaining: 4.9925 not_found: summary: No match found value: success: true request_id: req_1746123456_re2x3y result: status: NOT_FOUND email: unknown@example.com price: 0 credits_remaining: 5 '400': description: Missing or invalid email. content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Invalid API key. content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: Insufficient credits. content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: Lookup failed. content: application/json: schema: $ref: '#/components/schemas/Error' security: - ApiKeyAuth: [] x-codeSamples: - lang: Shell label: cURL source: |- curl --request POST \ --url https://api.tryhuntr.com/reverse-email \ --header 'x-api-key: ' \ --header 'Content-Type: application/json' \ --data '{ "email": "jane.doe@example.com" }' x-code-samples: - lang: Shell label: cURL source: |- curl --request POST \ --url https://api.tryhuntr.com/reverse-email \ --header 'x-api-key: ' \ --header 'Content-Type: application/json' \ --data '{ "email": "jane.doe@example.com" }' components: schemas: Error: type: object properties: error: type: string description: Human-readable error message. required: - error securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key description: >- Your Huntr API key. Get one at tryhuntr.com. Pass as x-api-key header on all authenticated requests. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.