Is the areanything special you need in html or Callbacks in a UIWebView to handle anchor tags with an href, or is there something special about an anchor tag with a mailto link
I wanted to note that this is probably not the best solution.
UIWebView does have a property called dataDetectorTypes - setting this to all or address should solve your problem without overriding the Method mentioned above:
myWebView.dataDetectorTypes = UIDataDetectorTypeAll; //or UIDataDetectorTypeAddress etc..
But be aware that this might not work on the simulator - I tried it with the iPad 6.0 Simulator where it's not working although on an iPad Device it's working like a charm!