Reverse Email - Sixtyfour AI Documentation

Send an email address and get back the person behind it: name, title, employer and LinkedIn profile. Use it to enrich inbound signups or deduplicate CRM records.

curl -X POST "https://api.sixtyfour.ai/reverse-email" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "lead": { "email": "saarth@sixtyfour.ai" } }'

import requests

response = requests.post(
    "https://api.sixtyfour.ai/reverse-email",
    headers={"x-api-key": "YOUR_API_KEY"},
    json={"lead": {"email": "saarth@sixtyfour.ai"}},
)
response.raise_for_status()
lead = response.json()

const response = await fetch("https://api.sixtyfour.ai/reverse-email", {
  method: "POST",
  headers: { "x-api-key": "YOUR_API_KEY", "Content-Type": "application/json" },
  body: JSON.stringify({ lead: { email: "saarth@sixtyfour.ai" } }),
});
if (!response.ok) throw new Error(await response.text());
const lead = await response.json();

Response

{
  "email": "saarth@sixtyfour.ai",
  "reverse_email_error": null,
  "reverse_firstname": "Saarth",
  "reverse_lastname": "Shah",
  "reverse_title": "CEO & Co-Founder",
  "reverse_company_name": "Sixtyfour",
  "reverse_linkedin_url": "https://www.linkedin.com/in/saarthshah",
  "cost_cents": 5,
  "cost_credits": 0.5
}

Request

Field	Type	Description
`lead`	object	Required. The lead to look up, with an `email`. Other fields come back unchanged.
`webhook_url`	string	Async only. HTTPS URL that receives the result. See Outgoing Webhooks.

Response

The lead comes back with the fields you sent plus every reverse_* field below. Fields with no match are null. cost_credits is what the request charged; cost_cents is the legacy field.

Field	Description
`reverse_email_error`	`No data found` when no person matched, otherwise `null`.
`reverse_firstname`, `reverse_lastname`	Name.
`reverse_title`, `reverse_headline`, `reverse_summary`, `reverse_position_description`	Current role and profile text.
`reverse_linkedin_url`, `reverse_linkedin_id`	LinkedIn profile.
`reverse_location`	Where the person is based.
`reverse_email_searched`, `reverse_domain`	The address looked up and its domain.
`reverse_company_*`	Employer: `name`, `domain`, `website`, `linkedin_url`, `description`, `industry`, `headquarters`, `headcount`, `headcount_range`, `year_founded`.

Async and bulk

Endpoint	Body	Returns
`POST /reverse-email`	`lead`	The lead
`POST /reverse-email-async`	`lead`	A `task_id`
`POST /reverse-email-bulk`	`leads`, 1 to 100	`{ leads, total_leads, successful_lookups, cost_cents, cost_credits }`
`POST /reverse-email-bulk-async`	`leads`, 1 to 100	A `task_id`

Poll async jobs with GET /job-status/{task_id}, as shown in the quick start. See Credits & Pricing for costs.

Errors

For error responses (400, 403, 422, etc.), see Handling Errors.