What are ESP API rate limits?

API rate limits control how many requests you can make to ESP systems in given timeframes. They prevent abuse, ensure fair resource sharing, and maintain platform stability. Limits apply to sending, list operations, analytics queries, and other API functions.

Typical structures: requests per second, requests per minute, daily limits, and burst allowances. Transactional APIs often allow higher rates than marketing APIs. Enterprise tiers typically have higher limits than starter plans.

Handling limits requires: understanding your specific plan's constraints, implementing retry logic with exponential backoff, batching operations where possible, distributing requests across time, and upgrading plans if you consistently hit ceilings. Design integrations to work within limits from the start.