Microsoft accidentally let slip back in May that it was developing a hybrid e-mail / chat app dubbed Flow. The Outlook team officially launched the app albeit under a different name.

The Redmond-based company says Send was built specifically for brief, snappy communications. Microsoft concedes that tools like text messaging and instant messaging are great for short messages but in reality, users often don’t have their co-workers’ mobile phone numbers or an IM client installed on their handset.

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