Google introduced a feature to Gmail, which allows users to email their task lists. This can be done by simply choosing the new "email task list" option found in the actions menu.
When a user clicks on this option, Gmail will open a new compose window with the contents of your current task list. It works in each task list view - My Order, Sort by Date, and Completed.
"So to email your mom to explain why you've been so busy and haven't been able to return her calls, just choose 'View completed tasks' from the Actions menu, then 'Email task list,’ and send away (Note: this may not be very convincing if you haven't actually checked anything off your list recently)," says Google Software Engineer Michael Bolin.
Gmail's tasks feature graduated from Gmail Labs earlier this summer. At that point, a print option was also added.