Inbox Zero vs Shortwave
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 | Shortwave 7.6 |
|---|---|---|
| Editorial score | 8.4 / 10 Placeholder | 7.6 / 10 Placeholder |
| Best for | Gmail triage plus drafts in your voice | The strongest AI search over your email archive |
| Works with | Gmail, Outlook | Gmail only |
| Primary job | Triage + drafting | AI search + triage |
| Price | From $16/mo Placeholder | Free–$14/mo Placeholder |
| Open source | Yes — self-hostable | No |
| Permissions | Full mailbox read/write access (self-hosting keeps data on your infrastructure) Placeholder | Full Gmail mailbox access Placeholder |
| Key strength | Drafts matched our tone more often than any other tool Placeholder | Best natural-language search of the tools tested Placeholder |
| Key limitation | Needs full mailbox access; self-hosting mitigates it Placeholder | No Outlook support at all Placeholder |
| Not for | People unwilling to grant full mailbox access and unable to self-host | Outlook and Microsoft 365 users — it is Gmail only |
Dimension scores
The five published rubric dimensions, side by side. All pre-launch values are labeled Placeholder.
| Dimension | Inbox Zero | Shortwave |
|---|---|---|
| Triage accuracy | 8.8 Placeholder | 7.5 Placeholder |
| Draft quality | 8.6 Placeholder | 7.1 Placeholder |
| Setup effort | 7.9 Placeholder | 7.8 Placeholder |
| Privacy posture | 8.2 Placeholder | 7.0 Placeholder |
| Price for value | 8.1 Placeholder | 8.0 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 Shortwave if…
The strongest AI search over your email archive. Found buried threads other tools missed. A full replacement client, which cuts both ways.
Full Shortwave evidence →