head to head · open source
Inbox Zero vs UnInbox
Inbox Zero has 12,895 GitHub stars, 1,653 forks, 209 open issues and last shipped yesterday. UnInbox has 1,760 stars, 128 forks, 42 open issues and last shipped 9 months ago. Inbox Zero leads on adoption by 633% (12,895 vs 1,760 stars). Inbox Zero is written in TypeScript under a custom or non-standard licence; UnInbox is written in TypeScript under a custom or non-standard licence. Inbox Zero has attracted 13% as many forks as stars, UnInbox 7%. Inbox Zero was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (email, nextjs), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Inbox Zero | UnInbox | |
|---|---|---|
| GitHub stars | ★ 13K | ★ 1.8K |
| License | Custom / other | Custom / other |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-02-11 |
| Forks | ⑂ 1.7K | ⑂ 128 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Inbox Zero if
- You weight community size — 13K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick UnInbox if
- You want the UnInbox feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and UnInbox fits your workflow better
About Inbox Zero
Inbox Zero your 24/7 AI email assistant Organizes your inbox, pre drafts replies, manages your calendar, and organizes attachments. Chat with it from Slack or Telegram to manage your inbox on the go. Open source alternative to Fyxer, but more customizable and secure. Website · Discord · Issues Mission To help you spend less time in your inbox, so you can focus on what matters most. Features AI Personal Assistant: Organizes your inbox and pre drafts replies in your tone and style. AI Rules for email: Explain in plain English how your AI should handle your inbox. Reply Zero: Track emails to reply to and those…
read the full Inbox Zero overview →
About UnInbox
UnInbox The Open Source Communication Infrastructure To our Website & App » UnInbox Twitter · UnInbox Discord Server :construction: Current Status UnInbox is Live! We are working on more features and infrastructure to make UnInbox better. Please join our Discord community to get the latest updates and to provide feedback. Join at app.uninbox.com. About Our core infrastructure is designed from the ground up for effective communication between you and the rest of the world. The webapp provides a flavoured experience of what email communication would be if it was re imagined for how we communicate today. Features…
read the full UnInbox overview →
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Frequently asked questions
Is Inbox Zero or UnInbox more popular?
Inbox Zero has 12,895 GitHub stars and UnInbox has 1,760. Inbox Zero has the larger community by that measure.
Are Inbox Zero and UnInbox free?
Neither Inbox Zero nor UnInbox declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Inbox Zero and UnInbox?
Inbox Zero is written in TypeScript and UnInbox in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Inbox Zero or UnInbox?
Choose Inbox Zero if you want the larger community (12,895 stars) or its Custom / other licence terms. Choose UnInbox if its feature set, stack or Custom / other licence fits better. Both are self-hostable.