Google has been experimenting with its Gmail service to make things more interesting, offering integration with Docs and Google Calendar. Though this recent integration of Remember The Milk shows a sign that Google is ready to go with integration beyond its own services. As we reviewed the service before, it’s a popular To-Do list app that allows users to remember their daily chores and you’re able to access the list from a variety of locations. The new Gmail gadget is accessible through all popular browsers, but you’ll have to enable it by going to the ‘Add any gadget by URL’ feature in Gmail Labs, and manually enter the Remember The Milk gadget location. If you’re in doubt, go here to find out more about the addition process.