# Zero

Fully open-source (MIT license), self-hostable AI email client. Zero is free, with no paid plan attached, at 0.email.

## Facts

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

## Capabilities

- Fully open-source (MIT license), self-hostable AI email client
- AI agents/LLMs built into the mail workflow, not bolted on
- 10.7k+ GitHub stars, active 2025-2026 development

## FAQ

### What is Zero?

Zero is listed under Email, Scheduling & Tasks, in the Productivity & Workflow category on Flocci AI Tools. Fully open-source (MIT license), self-hostable AI email client. It is free, with no paid plan attached, and it lives at 0.email.

### Is Zero free?

Zero is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 396 entries on Flocci AI Tools with no upgrade path built in.

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

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

### What can Zero do?

Zero does 3 things the catalog singles out: Fully open-source (mit license), self-hostable ai email client; ai agents/llms built into the mail workflow, not bolted on; 10.7k+ github stars, active 2025-2026 development.

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

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

## Related

- [Zero alternatives](https://aitools.flocci.in/alternatives/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/zero

Facts last verified: October 2026