Use Inbox...love the way it sorts mail by type (purchase receipt emails, promotions, travel, etc.) and keeps the pertinent, important stuff in my main inbox. It's cool that when I book travel and get confirmation emails for car, plane, hotel, it automatically groups that under one main mini folder for that city or trip that is easily accessed in the main folder. That folder stays at the top of your inbox until your trip is over. All old trips are archived in the travel folder like this for fast searching. I use my yahoo account for when I must give out my email for registration, free stuff, etc