Superhuman

Superhuman is a keyboard-shortcut-driven email client for Gmail and Outlook built around achieving inbox zero daily, with AI drafting replies and a split inbox that surfaces the highest-priority messages first. Grammarly acquired Superhuman in 2025 and rebranded its own parent company as Superhuman, folding the email app into a broader AI productivity suite alongside its writing tools — a notable naming overlap worth being aware of if you're searching for either product specifically.