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Polymail vs Superhuman Mail: catalog facts
Polymail	Superhuman Mail
Paid Paid plans with a free trial.	Paid Paid subscription; see the site for current plans.
macOS, iOS	Web
Read tracking and follow-up reminders inside email Several inboxes in one place	Keyboard-driven workflow for fast inbox processing Works with existing Gmail and Outlook accounts
Requires a paid subscription after the trial Read tracking may not suit privacy-minded recipients	Only supports Gmail and Outlook accounts Paid product, bundled into a wider suite
Downloadable app, Hosted service	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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