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Canary Mail vs Shortwave: catalog facts
Canary Mail	Shortwave
Paid Paid subscription, with a free trial or limited free tier.	Freemium Free to start with no credit card required, with paid options for more features.
Windows, macOS, Android, iOS	Windows, macOS, Android, iOS
Built-in encryption support alongside AI-assisted email triage Available across Windows, Mac, iOS, and Android	AI filters written in plain English Drafts replies that match your writing style
Full feature set requires a paid subscription AI features depend on cloud processing rather than being fully local	Built for Gmail accounts Relies on a hosted AI service that processes your mail
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 September 23, 2026

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