Remember AOL? The company best known for its email service? Three years ago, it released a Pinterest-like platform for desktop email called Alto. Today AOL announced the release of Alto for iOS and Android -- nearly a year after it began beta testing it. FastCompany writes: The app's design is based on the idea that email has shifted from a communication tool to more of a transactional system -- today's inboxes are filled with receipts, order confirmations, and reservations, rather than personal messages. To combat this flood of data, Alto automatically sorts email into stacks, such as "travel," "photos," "files," "shopping," and "personal."