TLDR: Grammarly, the leading AI writing assistant, has acquired Superhuman, a premium AI-native email application, in a strategic move to significantly advance its development of a comprehensive AI productivity platform. This acquisition positions email as a central communication surface for Grammarly’s vision of an ‘agentic future,’ where AI agents collaborate seamlessly to enhance communication efficiency and streamline workflows for professionals worldwide.
Grammarly, widely recognized for its digital writing assistance, has announced its acquisition of Superhuman, the AI-native email application lauded for its speed and efficiency. This strategic move, revealed around July 1, 2025, marks Grammarly’s most significant expansion beyond its core grammar and writing checks, firmly establishing its intent to become a dominant player in the broader AI productivity tools market.
Founded in 2009, Grammarly has evolved from a simple grammar checker into a sophisticated AI assistant for communication and productivity, currently supporting over 40 million daily users across more than 500,000 applications and websites. The company recently secured $1 billion in non-dilutive financing in May 2025, underscoring its robust financial position and commitment to AI innovation.
Superhuman, founded in 2015 by Rahul Vohra, Vivek Sodera, and Conrad Irwin, has garnered a reputation for transforming email management. The app, built for high-performing teams using Gmail or Outlook, boasts features like AI-powered drafting, instant scheduling, snippets for automated replies, read receipts, and smart reminders. Superhuman claims to help users respond one to two days faster and save up to four hours per week on email communications. The company had previously raised over $114 million in funding, with its last valuation reported at $825 million.
Grammarly CEO Shishir Mehrotra emphasized the strategic alignment of the acquisition, stating, ‘Superhuman has redefined email with unmatched speed and intelligence. By joining forces, we’re taking a major step forward in transforming how people communicate — making writing not just correct, but truly effective and effortless.’ Mehrotra further articulated Grammarly’s unique approach to AI, aiming to build an ‘AI superhighway’ that delivers writing agents directly to users where they work, rather than simply ‘bolting AI onto existing tools’ which can fragment the tech ecosystem.
Rahul Vohra, CEO of Superhuman, echoed this sentiment, highlighting email’s critical role in global communication. ‘Email is the main communication tool for billions of people worldwide and the number-one use case for Grammarly customers,’ Vohra commented. ‘By joining forces with Grammarly, we will invest even more in the core Superhuman experience, as well as create a new way of working where AI agents collaborate across the communication tools that we all use every day. These kinds of agents will free us all up to be more creative, strategic, and closer to achieving our human potential.’
The integration is expected to yield significant enhancements, including AI-generated email replies that match user tone and style, smarter context-aware writing assistance tailored for email and business communications, and improved productivity integration across various platforms. Email is already a primary focus for Grammarly, with its AI assistant helping to revise over 50 million emails per week across more than 20 email providers.
This acquisition is a pivotal step in Grammarly’s evolution into a multi-product company with hundreds of intelligent, task-specific agents. Combined with its earlier purchase of Coda, which provides a workspace for managing agents, Superhuman completes a critical piece of Grammarly’s ‘agentic future’ vision, positioning email as the ‘perfect staging ground for orchestrating multiple AI agents simultaneously.’
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The move comes amidst a rapidly accelerating ‘AI arms race’ in the tech industry, with giants like Google, Microsoft, and OpenAI heavily integrating generative AI into their everyday tools. Grammarly’s acquisition of Superhuman firmly places it among these elite companies, aiming to deliver its own powerful AI-powered writing and communication assistant directly into the daily workflows of professionals, students, and entrepreneurs, promising significantly enhanced productivity and streamlined communication.
