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Overview

Enrow implements rate limits to ensure fair usage and maintain service quality. The limit is the same across all endpoints and all plans.

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Default Limits

EndpointRate Limit
POST /email/find/single10 req/s
POST /email/find/bulk10 req/s
POST /email/verify/single10 req/s
POST /email/verify/bulk10 req/s
POST /phone/single10 req/s
POST /phone/bulk10 req/s
GET endpoints are not rate limited.
Rate limits are per API key and measured in requests per second (RPS).

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Exceeding the Limit

When you exceed the rate limit, you’ll receive a 429 Too Many Requests response: 
{
  "error": "TooManyRequests",
  "message": "Rate limit exceeded",
  "status": 429
}
Best practice — implement exponential backoff: 
async function requestWithRetry(url, options, maxRetries = 3) {
  for (let attempt = 0; attempt < maxRetries; attempt++) {
    const response = await fetch(url, options);

    if (response.status === 429) {
      const delay = Math.pow(2, attempt) * 1000;
      await new Promise(resolve => setTimeout(resolve, delay));
      continue;
    }

    return response;
  }

  throw new Error('Max retries exceeded');
}

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Need Higher Limits?

We can increase your RPS on a case-by-case basis. Contact us at api@enrow.io with your use case.

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Tips

Instead of making 100 single requests, make 1 bulk request (up to 5,000 items). A single bulk POST counts as 1 request against your rate limit.
// ❌ 100 requests = 10 seconds at 10 RPS
for (const contact of contacts) {
  await findEmail(contact);
}

// ✅ 1 request
await findEmailsBulk(contacts);
Polling the GET endpoint wastes your rate limit quota. Use webhooks to receive results automatically.
Store results to avoid redundant API calls for the same contact.