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Canary Mail vs Polymail: catalog facts
Canary Mail	Polymail
Paid Paid subscription, with a free trial or limited free tier.	Paid Paid plans with a free trial.
Windows, macOS, Android, iOS	macOS, iOS
Built-in encryption support alongside AI-assisted email triage Available across Windows, Mac, iOS, and Android	Read tracking and follow-up reminders inside email Several inboxes in one place
Full feature set requires a paid subscription AI features depend on cloud processing rather than being fully local	Requires a paid subscription after the trial Read tracking may not suit privacy-minded recipients
Downloadable app	Downloadable app, 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 October 2, 2026

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