Verify up to 50 addresses in one call

POST/api/v1/email/batch

authentication: Secret API key as a bearer token
billing: Each address bills like a single lookup — 1 credit for a fresh deliverable or risky verdict, everything else free — and the call stops cleanly where the balance ends.

Verifies a list synchronously under the exact single-lookup billing rules. Every address is prepared first, then all the mailbox probes that are still needed are sent to the verification provider together, so a full batch takes about as long as a handful of single lookups. data.results[] mirrors the single-address response per item, in input order, and each item's meta carries credits_used, cache_hit, and suppressed.

Addresses on your suppression list are served from the stored verdict at no cost and marked suppressed: true. Repeats inside the list are verified once. The list is walked in order and stops where the balance would run out: running out of credits mid-batch returns the paid partial results with meta.stopped_reason: "insufficient_credits" and processed lower than requested, never discarding billed work. Only a batch whose first lookup is refused answers the typed 402.

A batch counts as one request against the rate limit.

Request body

field	type	description
emailsrequired	string[]	1 to 50 addresses; each item at most 254 characters.

Example request

curl -X POST https://spaw.co/api/v1/email/batch \
  -H "Authorization: Bearer sk_live_…" \
  -H "Content-Type: application/json" \
  -d '{
  "emails": [
    "[email protected]",
    "[email protected]",
    "[email protected]"
  ]
}'

const response = await fetch('https://spaw.co/api/v1/email/batch', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer sk_live_…',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "emails": [
      "[email protected]",
      "[email protected]",
      "[email protected]"
    ]
  }),
});
const result = await response.json();

import requests

response = requests.post(
    'https://spaw.co/api/v1/email/batch',
    headers={'Authorization': 'Bearer sk_live_…'},
    json={
        'emails': [
            '[email protected]',
            '[email protected]',
            '[email protected]'
        ]
    },
)
result = response.json()

$ch = curl_init('https://spaw.co/api/v1/email/batch');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => ['Authorization: Bearer sk_live_…', 'Content-Type: application/json'],
    CURLOPT_POSTFIELDS => json_encode([
        'emails' => [
            '[email protected]',
            '[email protected]',
            '[email protected]'
        ]
    ]),
]);
$result = json_decode(curl_exec($ch), true);

Responses

200One result per processed address, plus the batch totals.

{
    "success": true,
    "data": {
        "results": [
            {
                "data": {
                    "email": "[email protected]",
                    "deliverable": "deliverable",
                    "reason": null,
                    "risk_score": 0,
                    "risk_level": "low"
                },
                "meta": {
                    "credits_used": 1,
                    "cache_hit": false,
                    "suppressed": false
                }
            },
            {
                "data": {
                    "email": "[email protected]",
                    "deliverable": "risky",
                    "reason": "role",
                    "risk_score": 30,
                    "risk_level": "medium"
                },
                "meta": {
                    "credits_used": 1,
                    "cache_hit": false,
                    "suppressed": false
                }
            },
            {
                "data": {
                    "email": "[email protected]",
                    "deliverable": "deliverable",
                    "reason": null,
                    "risk_score": 0,
                    "risk_level": "low"
                },
                "meta": {
                    "credits_used": 0,
                    "cache_hit": false,
                    "suppressed": false
                }
            }
        ]
    },
    "meta": {
        "requested": 3,
        "processed": 3,
        "credits_used": 2,
        "credits_remaining": 7,
        "stopped_reason": null,
        "request_id": "req_01m1kgdrtqdvwnks99vfgx2rcw"
    }
}

401The key is missing, malformed, or revoked.

{
    "success": false,
    "error": {
        "code": "UNAUTHENTICATED",
        "message": "Provide a valid API key as a bearer token.",
        "request_id": "req_01m1kgdm4xngzmbmff68g94w0c"
    }
}

402The balance is empty. The lookup did not run.

{
    "success": false,
    "error": {
        "code": "INSUFFICIENT_CREDITS",
        "message": "Your credit balance is empty.",
        "request_id": "req_01m1kgdm4xngzmbmff68g94w0c"
    }
}

422The request body could not be validated; `error.errors` lists the fields.

{
    "success": false,
    "error": {
        "code": "VALIDATION_FAILED",
        "message": "The email field is required.",
        "errors": {
            "email": [
                "The email field is required."
            ]
        },
        "request_id": "req_01m1kgdm4xngzmbmff68g94w0c"
    }
}

429Over 5 requests per second for the key. Retry after the limit resets.

{
    "success": false,
    "error": {
        "code": "RATE_LIMITED",
        "message": "Too many requests. Retry after the limit resets.",
        "request_id": "req_01m1kgdm4xngzmbmff68g94w0c"
    }
}

Error codes

Failures answer { success: false, error: { code, message, request_id } }. Each code has its own page.

markdown version·openapi.json