The API is rate limited and all users associated with the same account count against the same rate limit. Your current rate limit depends on your plan. Check out our Mailbox API article for the plan details as well as available add-ons. Response code 429 is returned when the throttle limit has been reached.
Write requests (
PATCH) count as 2 requests toward the rate limit.
||Maximum number of requests per interval|
||Number of requests remaining in the current rate limit interval|
||When a rate limit was reached, this header tells the client how many seconds to wait until the rate limit is refreshed|