# UnInbox: Free Open Source Alternative to Gmail, HEY

Canonical: https://caniforkit.com/fork/uninbox
Last updated: 2026-11-07

UnInbox (Open Source, Open Source) replaces Gmail, HEY. Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.

## Tool Specifications
- **Tool Name**: UnInbox
- **Type**: Open Source Project
- **License**: Open Source
- **Official Website**: https://uninbox.com
- **GitHub Repository**: https://github.com/un/inbox
- **GitHub Stars**: ★ 1.8k
- **Runs On**: Self-host
- **Maintenance Status**: nov 2026
- **Platforms**: web, self-hosted, docker to self-host
- **Data Storage**: All application data and configuration live on your own server or local database.
- **Installation**: Clone https://github.com/un/inbox or deploy with Docker Compose
- **Setup Requirements**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **The Catch / Limitation**: Requires self-hosting setup, updates, and server maintenance compared to managed Gmail.

## Paid SaaS Applications Replaced (2)
Replacing these paid tools with UnInbox saves up to $30/mo ($360/yr) in software subscriptions:

| Replaced Software | Category | SaaS Price | Comparison Guide |
| --- | --- | --- | --- |
| [Gmail](https://caniforkit.com/gmail) | [email](https://caniforkit.com/category/email) | $15/mo | [Compare Gmail vs UnInbox](https://caniforkit.com/vs/gmail-vs-uninbox) |
| [HEY](https://caniforkit.com/hey) | [community](https://caniforkit.com/category/community) | $15/mo | [Compare HEY vs UnInbox](https://caniforkit.com/vs/hey-vs-uninbox) |

## Frequently Asked Questions

### Is UnInbox free and open source?
UnInbox is an open source tool licensed under Open Source that runs on self-host. Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.

### What is the trade-off or limitation of using UnInbox?
Requires self-hosting setup, updates, and server maintenance compared to managed Gmail.

## Related

- [Self-Hosted Open Source Directory](https://caniforkit.com/self-hosted)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Software Categories Directory](https://caniforkit.com/categories)
- [Homepage](https://caniforkit.com)