inbox-zero vs Zero
AI email assistants compared
inbox-zero focuses on managing email with AI-drafted replies, rules, follow-up tracking, and cleanup tools. Zero brings multiple email providers into a unified, self-hostable app with AI-agent integrations, and emphasizes customization.

inbox-zero: Organize Email with an AI Assistant
Inbox Zero is an email assistant that helps individuals and teams handle busy inboxes with AI-drafted replies, rules, and follow-up tools. Use the hosted app or self-host it when you want more control over setup and configuration.

Zero: Self-Host an AI-Powered Email App
Zero is a self-hostable email app that connects accounts such as Gmail and Outlook in a unified inbox, with AI agents to modernize email workflows. It suits people who want an extensible alternative to closed email apps and are prepared to configure and operate the services it needs.
| inbox-zero | Zero | |
|---|---|---|
| Language | TypeScript | TypeScript |
| License | NOASSERTION | MIT |
| Stars | 12.4k | 10.8k |
| Forks | 1.6k | 1.3k |
| Last analyzed | Oct 3, 2026 | Oct 3, 2026 |
Key differences
- inbox-zero offers email workflows such as plain-language rules, Reply Zero tracking, bulk cleanup, and meeting briefs; Zero centers on connecting accounts such as Gmail and Outlook in one inbox.
- inbox-zero provides a hosted service as well as a self-hosting path; Zero is presented as a self-hostable app that requires configuration and operation of its services.
- inbox-zero lists Docker and Node.js v24 or later for self-hosting; Zero lists Node.js 18 or higher, pnpm 10 or higher, Docker, and PostgreSQL for local development.
- inbox-zero reports its license as NOASSERTION, while Zero uses the MIT license.
- Both use TypeScript; Zero also specifies Next.js and React, while inbox-zero lists a broader set of project topics including PostgreSQL, Prisma, and Turborepo.
- The supplied figures list inbox-zero with 12.4k stars and 1.6k forks, and Zero with 10.8k stars and 1.3k forks.
Choose inbox-zero if you…
- want AI help drafting replies, organizing email, and setting plain-language rules.
- need follow-up tracking, bulk inbox cleanup, or meeting briefs with email and calendar context.
- prefer the option of using a hosted service or self-hosting an email assistant.
Choose Zero if you…
- want to combine Gmail, Outlook, or other connected accounts in a unified inbox.
- prefer a customizable, self-hostable email app with AI-agent integrations.
- are prepared to configure and operate the app and its required services.
Compare the numbers side by side, or add more projects
This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.