Visit website Free to browse · updated 2026-06-27
What is zero?
The tool evaluates every email thread using criteria such as whether someone is awaiting a response, if missing it would have real consequences, or if it might cause regret later. Threads meeting these standards remain visible while the rest move to a recoverable archive state without any permanent removal. Safety comes from local execution only, with no external servers involved and full source availability for inspection. Users maintain control through editable rules written in natural language, and the system supports multiple Gmail accounts judged against consistent standards. Additional capabilities include generating reply drafts in the user's style on request, without autonomous sending, and compatibility with various AI providers via supplied keys that stay on the device.
Key features
Reads Gmail threads each morning and keeps only those needing attention
Archives non-essential emails reversibly without deletion
Runs locally on macOS using user's own Google and Claude credentials
Source-available with inspectable keep-rules written in plain language
Supports multiple Gmail accounts judged against the same rules
Generates reply drafts on demand matching user's tone
Nothing is deleted; all actions are reversible via Gmail search
AI models zero uses
Claude
default
Codex
Hermes
What you can use zero for
Morning Email Prioritization
Reads Gmail threads each morning and retains only those needing attention while archiving the rest reversibly.
Reversible Inbox Cleanup
Archives non-essential emails without deletion so every action remains recoverable through Gmail search.
Consistent Multi-Account Handling
Applies the same plain-language keep-rules across multiple Gmail accounts for unified daily processing.
How to use zero
- 1Download zero for macOS from the official site
- 2Enter your Google and Claude API credentials locally
- 3Review and edit the plain-language keep-rules file
- 4Allow the agent to run once each morning on your accounts
- 5Request on-demand reply drafts for any kept threads
zero pricing
Pricing model: Free. Plan details are indicative — check the site for current prices.
Free
Free
- Source-available
- No server
- Your own Google + Claude
- macOS only
Editor's verdict
Pros
- +Strong privacy with no server and local execution
- +Reduces inbox checking by handling open loops automatically
Cons
- –macOS only
- –Requires separate Claude API key
Our take: zero is a solid productivity choice. It's valued for strong privacy with no server and local execution and reduces inbox checking by handling open loops automatically. The main trade-off is macos only. A good pick if you want capable AI without a high upfront cost.
Frequently asked questions
Runs locally on macOS using only the user's own Google and Claude credentials with no server involved.
Summary
zero is a solid productivity choice. It's valued for strong privacy with no server and local execution and reduces inbox checking by handling open loops automatically. The main trade-off is macos only. A good pick if you want capable AI without a high upfront cost.
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