How to create a TFS 2010 SendEmailNotification handler

So I have recently moved my email to google apps and now require smtp authentication to send email from TFS. Lo and behold: TFS doesn't support this feature. As a workaround I tried setting up an SMTP relay on my TFS server but couldn't get it to work. I figured instead I'd create a TFS event handler which could react to the event which is triggered in TFS. So I have one question. Where do I start? I've never created any TFS extensions or anything like that. Can someone point me in the right direction?

From stackoverflow

• You would probably be best downloading the TFS Event Handler from codeplex which works with TFS 2010 as long as you install Team Explorer 2008 SP1 and if you need additional handlers you can create your own.

  If you want to write your own handler from scratch then you need to deside wither you want to handle SOAP events like the TFS Event Handler or to write an Event Sink.