When creating an about page for your Windows 8 metro / WinRT application, you probably display your e-mail address so users can contact you.
It's easy to make your e-mail adress clickable. Just place your text inside a button control and handle the button click:
private async void MailButton_Click_1(object sender, RoutedEventArgs e)
// Create the URI to launch from a string.
var uri = new Uri("mailto:firstname.lastname@example.org?subject=Subject of mail");
// Launch the URI.
bool success = await Windows.System.Launcher.LaunchUriAsync(uri);
The "mailto:" Uri will be launched, which will open the default e-mail application on the user's pc.
Tip: use the style "TextButtonStyle" to display the button as clickable text.