IIS Directory?

Mar 19 2015 7:13 AM

Here is my IIS Directory,I can't able to see the smtp option,How can I add here.I checked in control panel-->programmes and features-->Turn windows features on or off,but here also I didn't find out any checkbox belongs to smtp,If I enable means then only it'll show in IIS directory.So now How I have to get add ?can any one tell me?
please find the below image