Email Startup Superhuman Acquired by Grammarly

Grammarly has acquired Superhuman, the high-speed email client once known for its exclusivity and $350-a-year subscription, as part of its strategy to expand into AI-native productivity software. The acquisition brings Superhuman’s 100-person team including founder and CEO Rahul Vohra into Grammarly, along with a product that has long been celebrated for its speed, elegance, and focus on professional email workflows.

The deal significantly expands Grammarly’s surface area beyond writing assistance, adding a native email interface that already serves tens of thousands of power users. Grammarly, best known for its writing tools, currently operates at a much broader scale serving more than 40 million daily active users and running across 500,000 applications. With Superhuman, Grammarly adds one of the most time-consuming and mission-critical work applications to its AI-native suite.

A Relationship Years in the Making

The roots of the acquisition stretch back to 2017, when Vohra and Shishir Mehrotra, then CEO of Coda and now CEO of Grammarly, met at a productivity conference in Hawaii. As Vohra recounts, the two struck up a conversation by the pool, bonding over their mutual passion for building better work tools. Mehrotra, who had worked on Outlook during his early career at Microsoft, was intrigued by the direction Superhuman was taking. Vohra, in turn, was impressed by Mehrotra’s early demo of what was then called Krypton—later rebranded as Coda, a document platform that merges text, spreadsheets, databases, and apps into one collaborative surface.