Inbox Zero vs Superhuman
Both tools ran the same 412-message inbox under the same rubric. Pre-launch scores and any value marked Placeholder are representative until the first full test cycle is published — how we test →
| Attribute | Inbox Zero 8.4 | Superhuman 7.9 |
|---|---|---|
| Editorial score | 8.4 / 10 Placeholder | 7.9 / 10 Placeholder |
| Best for | Gmail triage plus drafts in your voice | Raw speed if you live in email all day |
| Works with | Gmail, Outlook | Gmail, Outlook |
| Primary job | Triage + drafting | Speed + triage |
| Price | From $16/mo Placeholder | $30/mo Placeholder |
| Open source | Yes — self-hostable | No |
| Permissions | Full mailbox read/write access (self-hosting keeps data on your infrastructure) Placeholder | Full mailbox read/write access Placeholder |
| Key strength | Drafts matched our tone more often than any other tool Placeholder | Keyboard-first flow cut our triage time noticeably Placeholder |
| Key limitation | Needs full mailbox access; self-hosting mitigates it Placeholder | Replaces your email client entirely Placeholder |
| Not for | People unwilling to grant full mailbox access and unable to self-host | Anyone who wants to keep their current email app |
Dimension scores
The five published rubric dimensions, side by side. All pre-launch values are labeled Placeholder.
| Dimension | Inbox Zero | Superhuman |
|---|---|---|
| Triage accuracy | 8.8 Placeholder | 7.8 Placeholder |
| Draft quality | 8.6 Placeholder | 7.4 Placeholder |
| Setup effort | 7.9 Placeholder | 7.6 Placeholder |
| Privacy posture | 8.2 Placeholder | 7.2 Placeholder |
| Price for value | 8.1 Placeholder | 7.0 Placeholder |
Which one should you pick?
Choose Inbox Zero if…
Gmail triage plus drafts in your voice. Labeled and drafted our test inbox with the fewest misses. Open source, so the privacy-cautious can self-host.
Full Inbox Zero evidence →Choose Superhuman if…
Raw speed if you live in email all day. The fastest client we tested, with capable AI triage — but it replaces your email app entirely.
Full Superhuman evidence →