Unknown method Send

[kahanu]

I've opened my MVC 3 application for the first time in VS 2013 and I'm getting this error saying there's no "Send" method on the MailMessage class.

I want to keep the application as MVC 3 and not upgrade it since it will be too much work to refactor everything. It all worked in VS 2010, but 2010 was getting real buggy and taking literally 15 minutes to open, that's why I tried opening the solution in VS 2013.

The "using" reference of Mvc.Mailer is greyed out in the controller, but it is enabled in the Mailer class. Can you help figure out what's going on?

Thanks.