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Polymail vs Airmail: catalog facts
Polymail	Airmail
Paid Paid plans with a free trial.	Freemium Available on the App Store; see the store listing for current pricing and subscription…
macOS, iOS	macOS, iOS
Read tracking and follow-up reminders inside email Several inboxes in one place	Supports Gmail, Exchange, iCloud, IMAP, POP3 and more Unified and smart inboxes with snooze
Requires a paid subscription after the trial Read tracking may not suit privacy-minded recipients	Apple platforms only Pricing details are not stated on the homepage
Downloadable app, 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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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