Grammarly, the popular AI writing assistant, has acquired Superhuman, a premium email platform known for speed and efficiency, marking a strategic expansion into AI-powered productivity tools.

The acquisition, confirmed by both companies, comes as Grammarly positions itself as more than a grammar tool. It is evolving into a full-fledged AI productivity suite, aiming to embed intelligent agents across communication and workflow tools. Financial details were not disclosed, but Superhuman, last valued at $825 million, brings in about $35 million in annual revenue.

Grammarly CEO Shishir Mehrotra called email “the dominant communication tool of work” and praised Superhuman as a clear innovator in the space.

Superhuman Will Stay Independent for Now

While Superhuman will continue to operate as a separate product, its entire team, including CEO Rahul Vohra, will join Grammarly. The company plans to integrate its AI agents, used for tone, clarity, and idea generation, into Superhuman’s email experience.

According to Grammarly, users spend nearly three hours a day in email. AI agents could automate tasks like replying, scheduling meetings, and summarizing long threads, freeing up users for more strategic work.

Competing in a Crowded Field

This acquisition follows Grammarly’s recent $1 billion financing round led by General Catalyst and its earlier purchase of Coda, a document and productivity platform. These moves signal Grammarly’s ambition to compete with Google Workspace, Microsoft 365, and other enterprise platforms. Grammarly’s AI already reaches over 500,000 applications. Integrating Superhuman helps bring deeper functionality to where professionals work the most: their inboxes.

A look into the future?

Grammarly and Superhuman both envision a future where AI does more than suggest edits, it actively manages your digital life. With this acquisition, Grammarly takes a major step toward building an all-in-one productivity platform powered by smart, responsive AI agents.

The move signals a shift in how we approach daily work: less manual effort, more strategic thinking. As AI continues to blend into everyday tasks, Grammarly aims to be at the forefront of that transformation, making work faster, smarter, and more intuitive.

With Superhuman on board, Grammarly isn’t just correcting your writing anymore-it’s rewriting the way you work.