Verdict: Spark Mail’s free tier and AI‑driven Smart Inbox cut clutter by about 30 % (per The Verge) and keep costs low, making it a solid everyday choice. Superhuman delivers sub‑second inbox loads (0.45 s per TechRadar) and advanced shortcuts, but its $30 / month price limits appeal to power users. For most users the free Spark wins on value, while Superhuman justifies its price only for speed‑centric workflows.
Winner: Spark Mail
Spark Mail: 7/10
Superhuman: 8/10
| Spark Mail | Superhuman | |
|---|---|---|
| Platforms | iOS, macOS, Android, Windows | iOS, macOS, Windows, Web |
| Pricing Model | Freemium with Pro subscription | Subscription only |
| AI Features | Smart Inbox prioritization | AI triage and read‑status tracking |
| Integrations | 50+ services | Gmail, Google Workspace |
Our pick: Spark Mail.
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