Can you believe it's Mother's Day? If the holiday has snuck up on you and you haven't yet mailed mom a card, don't worry. Thanks to several digital services out there, you can send mom your love in a snap. All you have to do is follow a few simple steps (like uploading a photo or filling out her email address), and just like that, she'll know how much you care. Get clicking for easy ways to wish mom a happy day.