When one of his co-founders, Vivek Sodera, urged him to fly to Hawaii for a business conference in 2017, Rahul Vohra hesitated. Superhumanhis AI email startup was still in its early days, and travel seemed like a distraction he couldn’t afford. But on his first afternoon by the pool, he met Shishir Mehrotra, an engineer who had worked at Microsoft and Google and shared Vohra’s obsession with email productivity.
Vohra gave Mehrotra a demo, took his credit card and registered him on the spot. Mehrotra went on to invest in Superhuman and later co-founded the collaborative document platform Coda (originally called Krypton). When Grammatically acquired Coda in late 2024, Mehrotra became CEO of the combined company. In July 2025, Grammarly acquired Superhuman and renamed the combined suite Superhuman.
Vohra founded Superhuman in 2014 to address a familiar professional frustration: the elusive goal of inbox zero. Managing a constant stream of newsletters, promotions and job messages can seem like a second job. Research from McKinsey and Microsoft shows that the average office worker receives about 120 emails per day and spends about three hours—nearly 28 percent of the workweek—managing them.
“That’s 3 billion hours every day that go into reading and writing email, or north of a trillion hours a year that go into that — and I couldn’t think of a bigger problem to solve,” Vohra told the Observer at Web Summit Vancouver earlier this month.
Raised in the UK, Vohra studied computer science at Cambridge. Before Superhuman, he founded Rapportive, a Gmail plugin that displayed social profiles alongside emails, which LinkedIn acquired in 2012. This experience sharpened his view of the shortcomings of mainstream communication tools for power users. The gap was highlighted when a Gmail product manager told him that their average user only manages two important emails a day. “It really made me realize how painful and how bad that experience was, and how Outlook and Gmail, these products, were designed for everyone, and therefore for no one,” Vohra said.
Superhuman sits on top of Gmail or Microsoft 365, replacing the standard interface with a faster, keyboard-driven experience. It uses AI to classify messages before users see them, compose responses with their voice, and trigger follow-ups when recipients don’t respond.
Backed by Andreessen Horowitz, First Round Capital and IVP, Superhuman became one of the few venture-backed email startups to achieve significant scale, achieving an $825 million valuation and $35 million in annual revenue by 2021.
For most of its early history, Superhuman Mail operated without generative AI, prioritizing speed and efficiency. Unlike Gmail or Outlook, which fetch data on demand, Superhuman downloads everything locally to eliminate loading time. Its minimalistic, keyboard-driven design and specialized features—like smart follow-up reminders and reading notifications by default—offered a powerful user experience that larger platforms ignored. The rise of generative artificial intelligence in 2022 and 2023, Vohra said, fundamentally reshaped the product.
Internal data shows that users who adopt Superhuman’s AI features handle 34 percent more emails and save more than four hours per week. Customers, including Spotifythe notion, OpenAI and Deel, underscore its appeal to high-performing teams. In contrast, Microsoft has said that Outlook Copilot users save about 30 minutes per week. Vohra added that a large consulting firm identified Superhuman and ChatGPT as the only AI products being purchased at a significant scale.
A standalone productivity app in the era of Big Tech AI and the “coding vibe”
Since launching in 2014, Superhuman has built a loyal following among professionals willing to pay $30 to $40 per month for email, despite free alternatives like Gmail and Outlook. This trade-off has only become more contentious as AI tools make it easier to build custom software.
Vohra has been asking the same question for a decade: why pay for email? His answer is blunt. “I think there’s just a big difference between products that are free, where you’re really the product … versus products that you’re actually paying for to do a good job.”
The debate has intensified with the rise of “vibe coding”, or the use of AI to generate software from simple English requests – Collins Dictionary’s 2025 word of the year. In a Reddit thread titled “Rebuilt Superhuman in 2 hours and saving that sweet $40/month,” one developer described building a bare-bones alternative using Claude Code. “I think we are completely done with monthly fees for most software,” the post said. In the end, there were more votes against than votes.
More experienced engineers are skeptical. A 15-year veteran who built an AI-powered email client put it this way: “Artificial intelligence can build an email client in a weekend. What it can’t do is handle the thousands of edge cases that make email actually work.” They include keeping Gmail connections stable when credentials expire, preventing the execution of malicious code embedded in emails, and building filters that reliably catch phishing attempts.
Meanwhile, competition is intensifying. Microsoft’s Copilot in Outlook and Google’s Gemini in Gmail have narrowed the gap in designing and summarizing AI—and they come integrated into existing workplace ecosystems. Corporate IT policies often restrict third-party tools, forcing users to revert to default clients regardless of preference.
For those who stick to Superman, the appeal is less about the features than the cognitive load. As one Reddit user put it, paying $30 a month beats “trying to fit the square pegs of free apps into the round holes of my information ecosystem.”
Today, the rebranded Superhuman suite costs $33 a month and bundles four products: Superhuman Mail, Grammarly’s AI writing, Coda’s collaborative space, and Superhuman Go, a cross-platform AI assistant. Whether that price is justified ultimately depends on how much users value their time and whether they trust a specialized tool over a general-purpose AI for the hours they spend in their inbox.
