Automated Testing Tool (Web API / REST) - repost

WEB API AUTOMATED TESTING TOOL. I'm on ASP.Net MVC 4 and I have a website and mobile App (Android and iOS). The reasons I want to have testing: I want to be able to verify the compatibility with all my project and verify the impacts. MY REQUIREMENT : - Web Admin console (For create the test and view the result) - Very easy to create or record a test. (Like Postman on my local PC ) -> I don't want a tool hard to configure and put in place. - Dashboard with Status : Fail, OK, result size (kb) and the time taken. - Keep the result of the Call (Json result) - Scheduled task - Email Log Postman have this on Jetpack. But, i want an online tool and I want to get notification when a test fails or if the performance change. You can provide me a existing solution or develop a new one. If you develop, you need to make that on .Net Thank you!