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Inbox Zero vs Cleanfox: catalog facts
Inbox Zero	Cleanfox
Freemium Free to start, with paid and sales-led plans for more use.	Free Free to use; funded by selling statistical data derived from scanned emails.
Web	Android, iOS, Web
Automatic labelling and pre-drafted replies Bulk unsubscribe and cold email blocking	Bulk unsubscribe and delete in one step Works with Gmail, Outlook and other mailboxes
Supports Google and Microsoft accounts only Mobile apps are not yet available	Scans your mail and sells statistics derived from it Needs access to your mailbox
Web application, Hosted service	Downloadable app, Web application
Open source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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