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Spark Mail vs Aqua Mail: catalog facts
Spark Mail	Aqua Mail
Freemium Free for individuals; paid plans add AI features and team tools.	Freemium Free to try, with a paid purchase that removes ads and unlocks more features.
Windows, macOS, Android, iOS	Android
Automatic inbox categorization cuts down on manual sorting AI-drafted replies can speed up routine email responses	Works with any IMAP or POP3 account alongside the major providers Does not route mail or passwords through its own cloud
AI and team features are gated behind a paid plan Some categorization requires manual correction over time	Free version shows ads Android only
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No 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.