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Spark Mail vs Edison Mail: catalog facts
Spark Mail	Edison Mail
Freemium Free for individuals; paid plans add AI features and team tools.	Free Offered as a download; the homepage does not list prices.
Windows, macOS, Android, iOS	macOS, Android, iOS
Automatic inbox categorization cuts down on manual sorting AI-drafted replies can speed up routine email responses	Unified inbox across several email accounts Available on phones and the Mac
AI and team features are gated behind a paid plan Some categorization requires manual correction over time	No Windows or Linux version Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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 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.