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

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