API Rate Limiting

API Rate Limiting

Rate limits are in place to protect our customers and the platform while allowing us to provide you with the best accuracy and validation speed. While it is not our intention at all, going over this limits may result in a temporary block. As such, we recommend our customers and partners to follow best practices and remain within these limits.

General rate limits

Bad requests to any endpoint (as an example, not including the email parameter in an API call) 100 times in 1 minute will result in a temporary block for 1 hour.

Requests to non existing pages or endpoints 100 times in 2 minute will result in a temporary block for 1 hour.

GetCredits V1 and V2

We allow a maximum of 50,000 requests in 1 hour for the api.zerobounce.net/v1/getcredits* and api.zerobounce.net/v2/getcredits* before temporarily blocking for 1 day.

Bad API key requests to api.zerobounce.net/v1/getcredits* and api.zerobounce.net/v2/getcredits* 200 times in 1 hour will result in a temporary block for 1 day.

API Validation V1 and V2

We allow a maximum of 50,000 requests in 10 seconds (validations) for the api.zerobounce.net/v1/validate* and api.zerobounce.net/v2/validate* before temporarily blocking for 1 minute.

Bad API key requests to api.zerobounce.net/v1/validate* and api.zerobounce.net/v2/validate* 200 times in 1 hour will result in a temporary block for 1 hour.

GetApiUsage V2

Bad requests to *api.zerobounce.net/v2/getapiusage 200 times in 1 hour will result in a temporary block for 1 hour.

BulkAPI and BulkAPI Batch Validate

We allow a maximum of 250 requests in 1 minute for the bulkapi.zerobounce.net/* before temporarily blocking for 1 hour.

We allow a maximum of 20 requests in 1 minute for the bulkapi.zerobounce.net/v2/validatebatch before temporarily blocking for 10 minutes.

Bad requests to bulkapi.zerobounce.net/* 200 times in 1 hour will result in a temporary block for 1 hour.

BulkAPI Unknown

Batch responses to *bulkapi.zerobounce.net/v2/validate* that contains over 20 unknown statuses (that are not greylisted or antispam) more than once per hour will temporarily block for 1 hour.

Activity V1

Bad API key requests to api.zerobounce.net/v1/activity* 200 times in 1 hour will result in a temporary block for 1 hour.