# Inbox Zero

Open-source codebase (9k GitHub stars), self-hostable for free. Inbox Zero is freemium — a usable free tier with paid plans above it, at getinboxzero.com.

## Facts

- **Pricing tier:** Free tier + paid
- **Works on:** Web, Self-hosted, Chrome Extension
- **Works in browser:** Yes
- **Sign-up:** Google sign-in

## Capabilities

- Open-source codebase (9k GitHub stars), self-hostable for free
- Plain-English custom rules engine for inbox automation
- Cold-email blocking and bulk unsubscribe built in

## FAQ

### What is Inbox Zero?

Inbox Zero is listed under Email, Scheduling & Tasks, in the Productivity & Workflow category on Flocci AI Tools. Open-source codebase (9k GitHub stars), self-hostable for free. It is freemium — a usable free tier with paid plans above it, and it lives at getinboxzero.com.

### Is Inbox Zero free?

Inbox Zero is freemium: there is a free tier you can work in and paid plans above it. It is one of 426 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.

### Can I use Inbox Zero in a browser, or is there an app?

Inbox Zero works in a normal browser tab with no install. It is available on the web, self-hosting and a Chrome extension. You can sign in with a Google account.

### What can Inbox Zero do?

Inbox Zero does 3 things the catalog singles out: Open-source codebase (9k github stars), self-hostable for free; plain-english custom rules engine for inbox automation; cold-email blocking and bulk unsubscribe built in.

### What is the best free alternative to Inbox Zero?

Goblin Tools is the closest free alternative: it sits in the same Email, Scheduling & Tasks sub-category and is free. Zero, Google Dreambeans and Reclaim.ai also start free. The full list is on the alternatives page.

## Related

- [Inbox Zero alternatives](https://aitools.flocci.in/alternatives/inbox-zero)
- [Email, Scheduling & Tasks](https://aitools.flocci.in/category/productivity-workflow/email-scheduling-tasks)
- [Best free AI email, scheduling and task tools](https://aitools.flocci.in/best/best-email-scheduling-tasks)
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Source: Flocci AI Tools — https://aitools.flocci.in/tool/inbox-zero

Facts last verified: October 2026