Rate Limits

legacy api — sunsets june 1, 2027 this page documents the original mailfloss api, which is being retired on june 1, 2027 new integrations should use the v1 api https //developers mailfloss com/quickstart the api is rate limited to a maximum of 50 requests per minute as you integrate the mailfloss api, ensure your application does not exceed this limit you can check the response headers to see your rate limit remaining you can have at most 10 bulk email verification sessions at any given time