Rate Limits
Each API key can make 10 requests per second. A request over the limit answers 429 with rate_limit_exceeded. Wait for the time in Retry-After and try again.
Sending also counts toward the workspace’s daily sending limit, one for each recipient. A send over that limit answers 429 with a message that names the limit. It resets at midnight UTC.
{ "name": "rate_limit_exceeded", "status": 429, "message": "Too many attempts. Try again later.", "errors": [], "request_id": "5f0c6a2e-8d1b-4c7a-9e3f-2b6d4a1c8e90" }
Headers
RateLimit-Policystring
The limit and window, such as 10;w=1.
RateLimit-Limitinteger
Requests allowed in each window.
RateLimit-Remaininginteger
Requests left in this window.
RateLimit-Resetinteger
Seconds until the window resets. Left out at the end of a window.
Retry-Afterinteger
Seconds to wait. Only on a 429.