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Email Lookup

Enter an email to search

API Keys

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API Documentation

Full API Docs

Authentication

Include your API key as header or query parameter:

# Header (recommended)
X-API-Key: your_api_key

# Query parameter
?api_key=your_api_key

Endpoints

GET /v1/email/{email}
Lookup a single email address
GET /v1/email?email={email}
Alternative query parameter format
POST /v1/bulk
Bulk email lookup (max 100 per request)
Body: {"emails": ["a@b.com", "c@d.com"]}
POST /v1/phone/bulk
Reverse phone lookup (max 10 per request) — any number format accepted
Body: {"phones": ["555-123-4567", "(800) 555 0199"]}

Rate Limits

100 requests/sec per IP (10,000 emails/sec via bulk endpoint). 5,000,000 queries/day per key. Exceeding returns HTTP 429.

Success Response

{
  "success": true,
  "count": 1,
  "results": [
    {
      "names": ["JOHN DOE"],
      "email": "JOHN@EXAMPLE.COM",
      "phones": ["5551234567", "5559876543"],
      "addresses": ["123 MAIN ST NY"],
      "countries": ["USA"]
    }
  ]
}

All registrations for the same email are merged into one result with deduplicated phones, names, and addresses.

Error Responses

401 Unauthorized
{"success": false, "error": "Invalid API key"}
400 Bad Request
{"success": false, "error": "Email required"}
429 Too Many Requests
{"success": false, "error": "Rate limit exceeded"}

Exclude Datasources

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Search Script

Python script for bulk email lookups. Your API key is pre-configured.

Install Python

Windows: Download from python.org/downloads — check "Add to PATH" during install.

Mac: brew install python3 or download from python.org/downloads

Linux: sudo apt install python3 (Debian/Ubuntu) or sudo dnf install python3 (Fedora)

Usage

Create a text file with one email per line, then run:
python3 search.py emails.txt

Outputs results.csv and not_found.txt.

search.py

Your API key is embedded below.

            

Source Lookup Script

Reads any file format, extracts emails, and appends data sources to each line.

Install Python

Windows: Download from python.org/downloads — check "Add to PATH" during install.

Mac: brew install python3 or download from python.org/downloads

Linux: sudo apt install python3 (Debian/Ubuntu) or sudo dnf install python3 (Fedora)

Usage

Pass any text file — emails are extracted from each line automatically:

python3 xref.py input.txt

Output saved as input_xref.txt. Matching lines get sources appended:

john@example.com,source1;source2

Script Filters

Baked into the downloaded script — re-download after changing.

None excluded

xref.py

Your API key is embedded below.