Rate Limits - Notvis Connect

Rate Limiting

Rate limiting is enforced at the infrastructure level to ensure fair usage and platform stability. The API itself does not enforce per-request rate limits — this is handled by the upstream proxy layer.

Current Limits

Plan	Requests per second	Daily limit
Free	10 req/s	100 emails/day
Starter	50 req/s	10,000 emails/day
Growth	200 req/s	100,000 emails/day
Enterprise	Custom	Custom

Rate limits are applied per API key. Contact us if you need higher limits.

Rate Limit Headers

When rate limiting is active, the following headers are included in responses:

Header	Description
`X-RateLimit-Limit`	Maximum requests allowed in the window
`X-RateLimit-Remaining`	Remaining requests in the current window
`X-RateLimit-Reset`	Unix timestamp when the window resets

Handling Rate Limits

If you exceed the rate limit, you’ll receive a 429 Too Many Requests response. Implement exponential backoff in your integration:

async function sendWithRetry(payload, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    const response = await fetch('https://api.notvis.com/v1/emails/send', {
      method: 'POST',
      headers: {
        'Authorization': 'Bearer nc_live_your_api_key',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify(payload),
    });

    if (response.status !== 429) return response;

    const retryAfter = response.headers.get('Retry-After') || Math.pow(2, i);
    await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
  }
  throw new Error('Rate limit exceeded after retries');
}