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Aqua Mail vs Slow Mail: catalog facts
Aqua Mail	Slow Mail
Freemium Free to try, with a paid purchase that removes ads and unlocks more features.	Free Free and open source under the MIT licence.
Android	Android
Works with any IMAP or POP3 account alongside the major providers Does not route mail or passwords through its own cloud	No emails or message lists stored on the device Works with any IMAP and SMTP provider
Free version shows ads Android only	Needs an active internet connection to read mail Slower than clients with a local cache
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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