Superhuman helps you triage email faster. InboxBrief does the triage for you and delivers a prioritized summary, tasks and an agenda.
Superhuman is a remarkable premium email client: keyboard shortcuts, a lightning-fast interface, split inbox. But its promise is still "spend your inbox time more efficiently". InboxBrief starts from the opposite premise: you should barely need to open your inbox at all. The AI reads, summarizes, extracts the actions and feeds your agenda - you only handle what matters.
| Criteria | InboxBrief | Superhuman |
|---|---|---|
| Philosophy | Stop living in your inbox: one prioritized digest a day. | Live in your inbox, but faster (shortcuts, speed). |
| Price | Free trial, then a few dollars a month. | Premium subscription (~$30 US/month per user). |
| Tasks & agenda | Built in: emails become tracked tasks and events. | Reminders and snooze, but no persistent planner. |
| Writing email | Out of scope: read-only, no writing at all. | Excellent: fast composing, scheduled sends, AI writing. |
| Mailbox access | Read-only (official OAuth): can never send or delete. | Full read/write access to your mailbox. |
Superhuman optimizes every minute you spend in the inbox. InboxBrief aims for those minutes not to exist: a summary in the morning, actions extracted, agenda up to date - you only open the inbox to answer what matters.
With read-only access, InboxBrief can never send, delete or move an email. It's an analysis layer on top of your existing mailbox, not a replacement email client.
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Many users keep their favorite client (Gmail, Outlook, even Superhuman) for writing, and let InboxBrief handle the reading, sorting and planning.
Not exactly: Superhuman is an email client (read AND write), InboxBrief is a read-only intelligence layer (summary, priorities, tasks, agenda). If your pain is "too much email to read", InboxBrief addresses it directly; if it's "I reply too slowly", Superhuman remains relevant.
Yes. InboxBrief connects to your Gmail or Outlook inbox read-only, independently of whichever client you use to read and reply.