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Superhuman Mail vs Spark Mail: catalog facts
Superhuman Mail	Spark Mail
Paid Paid subscription; see the site for current plans.	Freemium Free for individuals; paid plans add AI features and team tools.
Web	Windows, macOS, Android, iOS
Keyboard-driven workflow for fast inbox processing Works with existing Gmail and Outlook accounts	Automatic inbox categorization cuts down on manual sorting AI-drafted replies can speed up routine email responses
Only supports Gmail and Outlook accounts Paid product, bundled into a wider suite	AI and team features are gated behind a paid plan Some categorization requires manual correction over time
Web application, Hosted service	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.