Email is a painfully out-of-date technology, but it’s not going anywhere. A new startup, Inbox, is launching its “next-generation email platform” as an alternative to aging protocols like IMAP and SMTP. Before you email junkies get too excited, this is a platform play, so there’s no user-facing app just yet. The core of Inbox’s efforts is an Inbox Sync Engine for developers that adds a modern API on top of mail providers, including Gmail, Yahoo and Outlook.com. The engine itself is open source, but Inbox is planning to release a hosted SaaS version of its platform later this year. In...

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