Skip to main content

​
Step 1 — Get your API key

Sign up for a free account — no credit card required. Your API key is available immediately in the dashboard under API Keys. Your key looks like this: 
dl_live_xxxxxxxxxxxxxxxxxxxx
Keep your API key secret. Never expose it in client-side code or commit it to a public repository.

​
Step 2 — Make your first request

Send a POST request to any endpoint with your key in the Authorization header and a JSON body. Here’s a live email validation call using cURL: 
curl -X POST https://api.datalinkapis.com/v1/email \
  -H "Authorization: Bearer dl_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "email": "hello@datalinkapis.com" }'

​
Step 3 — Read the response

A successful response looks like this: 
{
  "email": "hello@datalinkapis.com",
  "valid": true,
  "deliverable": true,
  "syntax_valid": true,
  "mx_found": true,
  "disposable": false,
  "role_account": false,
  "domain": "datalinkapis.com",
  "credits_used": 1
}
Every response includes a credits_used field showing how many credits were deducted for the call.

​
Try it interactively

You can test any endpoint live — without writing code — in the API Playground. Enter your API key, pick an endpoint, and fire.

​
Next steps

Authentication

Full auth reference and key management.

Credits

How credits are calculated and managed.

API Reference

Every endpoint, parameter, and response field.