Features
Nextbox makes a crowded inbox feel like a feed of people and conversations instead of a filing cabinet.
The Feed shows new mail as readable cards with fast, reversible actions. The DMs tab collects real back-and-forth threads — the ones where at least two people have actually written something — so active conversations stop getting buried under receipts, newsletters, and notifications.
On supported devices, Nextbox can privately suggest short replies, summarize long threads, and propose what likely needs you. That work happens on your device using the operating system's own language model. Your email is not sent to Nextbox or to any AI company for these features.
Nothing important disappears. Priority is a visible suggestion you can correct, never a hidden mailbox — the complete, newest-first list of your mail is always one tap away. And Nextbox never sends a word you did not write and press send on.
Everything you get
- A feed, not a filing cabinet — your newest mail as readable cards
- DMs: real conversations, separated from the newsletters automatically
- Private on-device AI — your mail never leaves your phone
- Suggested replies you review and edit; Nextbox never sends for you
- Nothing hidden: chronological All Mail is always one tap away
- Tracking images blocked by default; every link shows its real destination
- Works with Gmail, Outlook, Fastmail, and any IMAP account
- No ads. Ever. Your inbox is not an advertising surface.