- Iro is a non blocking server for sending a message to a bunsh of recipient. It can handle diffrent types of message typs and can be extended easially. - It was initially written for sms backend of castorticker.de. Diffrent backends are supportes by Iro. + Iro is a non blocking server for sending a message to a bunsh of recipients. It can handle different types of message and can be extended easially. + It was initially written for sms backend of castorticker.de. There are diffrent backends are supported by Iro. + Iro helps you for these kinds of tasks: You want to send a message to some recipient over a different backend, than for other recipients. + Or you want to define fallback strategies: If one messages can't be send over this backend use another. + Because Iro also knows users, you can create bills for different clients.