250ok is a software company that specializes in email delivery. 250ok provides businesses and organizations with necessary insight to identify and prevent potential risks and issues with delivering messages to their recipients. 250ok API provides its customers the freedom to share and use its application data however they want. In addition to being able to both read data and interact with the application using POST/PUT, 250ok customers can also choose the desired output format i.e. JSON, XML, CSV, or serialized for their data.