"At Superhuman our vision has always been to build what we also call an AI native productivity suite," Vohra said. He got in touch with Mehrotra near the time of the Grammarly-Coda acquisition and "over several conversations, it became very clear that we share the same vision, which is to build the AI-native productivity suite of choice."

Grammarly has signed a deal to acquire email efficiency tool Superhuman as part of the company's push to build an artificial intelligence-powered productivity suite and diversify its business, its executives told Reuters in an interview.