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Polymail vs Canary Mail: catalog facts
Polymail	Canary Mail
Paid Paid plans with a free trial.	Paid Paid subscription, with a free trial or limited free tier.
macOS, iOS	Windows, macOS, Android, iOS
Read tracking and follow-up reminders inside email Several inboxes in one place	Built-in encryption support alongside AI-assisted email triage Available across Windows, Mac, iOS, and Android
Requires a paid subscription after the trial Read tracking may not suit privacy-minded recipients	Full feature set requires a paid subscription AI features depend on cloud processing rather than being fully local
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 22, 2026

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