Microsoft is reportedly developing a new smartphone chat app, set to debut on iPhone, that works as an accompaniment for its Outlook inbox app. According to details discovered on a publicly accessible site, the new app — called Flow — is designed to offer “fast, fluid, natural conversations”, with “no subject lines, salutations, or signatures”, and will apparently allow for quick communication with email contacts outside of your regular email inbox.

The details were unearthed by Twitter user h0x0d, who found a description of the app on a download page marked “Microsoft Confidential”. Flow’s existence has yet to be confirmed by the company, but the details seem plausible — as ZDNet points out, Flow would be to Outlook as Qik is to Skype.

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