head to head · open source
Inbox Zero vs AgentMail
Inbox Zero has 12,895 GitHub stars, 1,653 forks, 209 open issues and last shipped yesterday. AgentMail has 41 stars, 17 forks, 3 open issues and last shipped 5 days ago. Inbox Zero leads on adoption by 31,351% (12,895 vs 41 stars). Inbox Zero is written in TypeScript under a custom or non-standard licence; AgentMail is written in TypeScript under MIT. Inbox Zero has attracted 13% as many forks as stars, AgentMail 41%. Inbox Zero was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| Inbox Zero | AgentMail | |
|---|---|---|
| GitHub stars | ★ 13K | ★ 41 |
| License | Custom / other | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-10-29 |
| Forks | ⑂ 1.7K | ⑂ 17 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Inbox Zero if
- You weight community size — 13K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick AgentMail if
- You want the AgentMail feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and AgentMail fits your workflow better
About Inbox Zero
Inbox Zero your 24/7 AI email assistant Organizes your inbox, pre drafts replies, manages your calendar, and organizes attachments. Chat with it from Slack or Telegram to manage your inbox on the go. Open source alternative to Fyxer, but more customizable and secure. Website · Discord · Issues Mission To help you spend less time in your inbox, so you can focus on what matters most. Features AI Personal Assistant: Organizes your inbox and pre drafts replies in your tone and style. AI Rules for email: Explain in plain English how your AI should handle your inbox. Reply Zero: Track emails to reply to and those…
read the full Inbox Zero overview →
About AgentMail
Agentmail TypeScript Library The Agentmail TypeScript library provides convenient access to the Agentmail APIs from TypeScript. Table of Contents Installation Reference Usage Environments Request and Response Types Exception Handling Binary Response Advanced Subpackage Exports Additional Headers Additional Query String Parameters Retries Timeouts Aborting Requests Access Raw Response Data Logging Custom Fetch Runtime Compatibility Contributing Installation Reference A full reference for this library is available here. Usage Instantiate and use the client with the following: Environments This SDK allows you to…
read the full AgentMail overview →
More in Productivity & Utilities
Related comparisons
More Email & Communication projects
Compare either of these against the rest of the Email & Communication field.
Frequently asked questions
Is Inbox Zero or AgentMail more popular?
Inbox Zero has 12,895 GitHub stars and AgentMail has 41. Inbox Zero has the larger community by that measure.
Are Inbox Zero and AgentMail free?
Both are open source. Inbox Zero has no licence declared in this registry, and AgentMail is licensed under MIT. Both are free to self-host.
What is the difference between Inbox Zero and AgentMail?
Inbox Zero is written in TypeScript and AgentMail in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Inbox Zero or AgentMail?
Choose Inbox Zero if you want the larger community (12,895 stars) or its Custom / other licence terms. Choose AgentMail if its feature set, stack or MIT licence fits better. Both are self-hostable.