Quickstart

The fastest way to see Fender work is the disposable-email endpoint. It needs no authentication for light, rate-limited use.

1. Make a request

curl "https://api.fender.ai/v1/disposable?email=jane@mailinator.com"

You can also check a bare domain:

curl "https://api.fender.ai/v1/disposable?domain=guerrillamail.com"

2. Read the response

{
  "input": "jane@mailinator.com",
  "domain": "mailinator.com",
  "disposable": true,
  "matched": "mailinator.com",
  "reason": "domain_on_blocklist"
}

Field	Meaning
disposable	true if the domain is a known throwaway provider.
matched	The exact domain that matched the blocklist (or null).
reason	Machine-readable explanation.

3. Batch checks

Check up to 100 emails/domains in one call:

curl -X POST "https://api.fender.ai/v1/disposable/batch" \
  -H "Content-Type: application/json" \
  -d '{"emails":["a@gmail.com","b@mailinator.com"],"domains":["sharklasers.com"]}'

4. Go further

• Create an API key for higher rate limits.
• Explore the interactive playground.
• Browse the full OpenAPI reference.