Hah.. the Swiss Post has an app that lets you design a postcard and send it, it even has a "every user can send 1 free postcard every day" that cool kids use a meme-printing service. I feel like they should also offer a "print-a-letter-in-the-future and send it to user" service. As a bonus they can probably track the movements of their customers because of their "address change" service (if you move houses and use this service they'll let companies know of your new address). And it's the Swiss Post, it shouldn't be disappearing any time soon..