Ukrainian-founded Grammarly has acquired AI email client Superhuman for an undisclosed amount, advancing its push to become an AI productivity platform and making email central to its agent-focused vision.
About Grammarly
- Founded in 2009, Grammarly now supports over 40 million users daily. Its AI agents, including grammar and tone suggestions, rephrasing tips, and an AI detector, operate across more than 500,000 websites and apps, offering contextual support to users in real time.
- In May 2025, Grammarly secured $1 billion in non-dilutive financing from General Catalyst's Customer Value platform.
About Superhuman
- Founded in 2015 by Rahul Vohra, Vivek Sodera, and Conrad Irwin, Superhuman is an AI-native email platform built for high-performing teams using Gmail or Outlook.
- The app transforms how professionals manage email by enabling faster, more responsive communication with features like Snippets for automated replies, AI-powered drafting, instant scheduling, read receipts, and smart reminders.
- The firm saves users up to four hours per week. Superhuman helps teams collaborate more efficiently and reclaim focus from overloaded inboxes.
Details of the acquisition
- Grammarly bought Superhuman to strengthen its AI tools by adding an email app built for speed and efficiency. The idea is to use email as a place where AI can help with everyday tasks like sorting messages, replying, and setting up meetings.
“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," CEO of Superhuman, Rahul Vohra, commented.
- This follows Grammarly’s earlier purchase of Coda, as both apps will now work together to let AI handle more of the routine work people do across different tools. As part of the deal, Superhuman’s CEO, Rahul Vohr, and other team members are joining Grammarly.
“With Superhuman, we can deliver that future to millions more professionals while giving our existing users another surface for agent collaboration that simply doesn’t exist anywhere else. Email isn’t just another app; it’s where professionals spend significant portions of their day, and it’s the perfect staging ground for orchestrating multiple AI agents simultaneously," claims Shishir Mehrotra, CEO of Grammarly.
