What is Superhuman?

Superhuman began as a fast, keyboard-driven email client for Gmail and Outlook and has expanded into a broader AI productivity suite spanning mail, calendar and increasingly document-style work. The pitch is speed: nearly every action has a shortcut, the interface loads instantly, and AI features are layered on top to cut the time spent triaging, summarizing and replying to a busy inbox. Grammarly acquired Superhuman in 2025, folding its writing-assistance technology into the product.

Who it is for

Superhuman targets people whose inbox is a bottleneck — founders, executives, salespeople and anyone managing high email volume who is willing to pay a premium for speed. It's built for users comfortable learning a keyboard-first interface rather than clicking through a traditional mail client, and it's most valuable for people who already live in Gmail or Outlook and want AI help without switching platforms entirely.

Key features

AI-drafted replies — generates responses matched to your writing style and past correspondence, not generic boilerplate
Thread summarization — condenses long email chains into a quick summary so you don't have to scroll to catch up
Auto-labeling and triage — automatically sorts and prioritizes incoming mail so the most important messages surface first
Split inbox — separates high-priority mail from newsletters, notifications and low-priority threads
Keyboard shortcuts throughout — nearly every action (archive, snooze, reply, label) is reachable without touching the mouse
Follow-up reminders — flags messages that need a response and resurfaces them if nobody replies
Calendar integration — scheduling and availability tools alongside the inbox rather than in a separate app

Pricing

Superhuman is a paid product with no permanent free tier, positioned at a premium relative to standard email clients — pricing has historically started around $25 per month for individuals, billed based on plan and seat count, with team and business options available. Because Grammarly now owns Superhuman, pricing and bundling with Grammarly's other products may evolve; check the current plan page before subscribing, since exact tiers can change faster than a review can track.

Strengths

The speed is real and immediately noticeable — for anyone used to standard Gmail or Outlook web clients, the shortcut-driven interface and instant load times are a tangible upgrade. The AI drafting feature is a genuine time-saver because it's tuned to match your own tone rather than producing generic AI-sounding replies, and the split inbox plus auto-labeling combination meaningfully reduces the mental overhead of scanning a cluttered inbox. Follow-up reminders also close a real gap in most default mail clients, which don't track whether an important message went unanswered.

Weaknesses

The price is the biggest hurdle: it's a significant recurring cost for what is, at its core, still an email client, and it's a harder sell for anyone not managing genuinely high email volume. Superhuman only supports Gmail and Outlook, so it's not an option for people on other providers. The keyboard-shortcut-first design also has a learning curve — new users who want to click through menus the way they would in a conventional client may find the onboarding period slower than expected before the speed gains kick in.

Getting started

Sign up on superhuman.com, connect your existing Gmail or Outlook account, and go through the guided onboarding, which teaches the core keyboard shortcuts before you start using it day to day. AI drafting and summarization are available from the start, and the split inbox and triage rules can be customized as you learn which categories matter most to your workflow.

Verdict

Superhuman is worth the premium if email genuinely is your bottleneck and you're willing to invest a short learning period into keyboard-first navigation — for that user, the AI drafting and triage features pay for themselves quickly. If you want AI productivity features without an email-client price tag, it's worth comparing against broader tools in AI Productivity, Notes & Slides like Motion or Notion AI before committing to a dedicated mail client.