The Mailstand API provides a number of safeguards against bursts of incoming traffic to help maximize its stability. Customer who send many requests in quick succession may see error responses that show up as status code 429.
Users are allowed 100 requests per 15 seconds.
Treat this limit as a maximum and don’t generate unnecessary load. If you suddenly see a rising number of rate limited requests, please contact support.
We may reduce limits to prevent abuse, or increase limits to enable high-traffic applications. To request an increased rate limit, please contact support. If you’re requesting a large increase, contact us 6 weeks in advance of when you’ll need the increased rate limit.