Exceptionless

Go to http://exceptionless.com and create an acoount there. When you create a project it gives you the instructions to keep track of exceptions in your application.

Install-Package Exceptionless.Mvc

Update the <exceptionless apiKey="API_KEY_HERE" /> section located in the project's web.config with your Exceptionless API key:

8e43bd535ff54c558a301a2c9da8cefc

That's it! Your project should now automatically be sending all unhandled exceptions to Exceptionless. You can also send handled exceptions to Exceptionless using ex.ToExceptionless().Submit().