Open Source
Zero
by Mail-0
Experience email the way you want with Mail0 – the first open source email app that puts your privacy and safety first.
Our verdict
We have not reviewed Zero yet
No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.
From the listing
About Zero
Zero is an open source email application from Mail-0 that prioritizes user privacy and safety. It is built with TypeScript and offers a customizable email experience. The project is available on GitHub and has a community Discord for support.
Best for
Developers and privacy advocates seeking an open source email client they can customize and self-host.
Use cases
- Self-hosting a privacy-focused email client
- Customizing email workflows and interfaces
- Contributing to an open source email project
Notes
10,870 stars on GitHub. Last updated 2026-10-27. Licensed MIT.
Pros
- Open source with a strong community (over 10k stars)
- Privacy and safety as core design principles
- Built with TypeScript for maintainability
Cons
- Early stage, may lack mature features
- Requires technical setup for self-hosting
- Community support primarily via Discord
Key facts
What we have checked
- Latest version
- 0.1 (released 18 July 2025)
- Days since the last commit
- 10
- GitHub forks
- 1,337
- GitHub stars
- 10,881
- Days to a first reply on issues
- 259.7
- Open issues
- 0
- Releases in the last 90 days
- 0
Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.
Stars and usage
How Zero is growing
10,869 to 10,881
Health and security
Is Zero looked after, and what do its setup files show
Health score
56 out of 100
| Part | Points | What we saw |
|---|---|---|
| Recent activity | 30 of 30 | Last push 10 days ago |
| Releases | 0 of 15 | 0 releases in 90 days |
| Issue replies | 0 of 20 | First reply in 259.7 days (median) |
| Maintainer | 15 of 15 | Owned by an organisation |
| Official source | Not counted | MCP servers only |
Alternatives
Alternatives to Zero
| Record | Type | How we know | Checked |
|---|---|---|---|
| GmailThis is an alternative to it | Product | Linked recordGitHub | |
| SuperhumanThis is an alternative to it | Product | Linked recordGitHub |
Compare
Compare Zero side by side
Sources
Where this comes from
A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.
Changelog
What changed
Released 0.1
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