You can use this web page to install tiggit mail on your BlackBerry. All you need to do is plug in your USB BlackBerry, and enter your BlackBerry password on the page below. The web-page will then install tiggit mail on your handheld via the USB cable.
The top of the screen may be displaying a message about restriced content. To allow the installer to work, you will need to allow this page to load the blocked content.