Inbox Zero

Overview

Inbox Zero is an AI email assistant and email client for Gmail, Google Workspace, and Microsoft Outlook accounts. The assistant works in the background to organize your inbox, pre-draft replies in your tone and style, and manage your calendar, while the email client offers a fast split-inbox experience on web, desktop, and mobile. It is open source, with the AI assistant, web app, and desktop email app published on GitHub, and it can also be self-hosted for full control of your data.

Key Features

• AI personal assistant that organizes your inbox and pre-drafts replies in your tone and style
• AI rules for email configured in plain English
• Reply Zero tracking of emails to reply to and those awaiting responses
• Bulk unsubscribe and bulk archive tools for cleaning up your inbox
• Cold email blocker that automatically blocks cold emails
• Email analytics that track your activity and trends over time

Use Cases

• Individuals, entrepreneurs, and executives who want to buy back time spent on email
• Power users and teams handling high email volumes who need integrations and shared analytics
• Founders, small businesses, creators, realtors, customer support, and e-commerce teams managing busy inboxes
• People who want to self-host their email assistant and email client for full control

Getting Started

• Use the hosted version of Inbox Zero at getinboxzero.com
• Connect your Google or Microsoft email account; smart categories are set up automatically and you can use the provided categories or create your own
• Self-host by running the one-time setup wizard with npx @inbox-zero/cli setup, then start containers with npx @inbox-zero/cli start, and open http://localhost:3000
• Verify a Gmail or Outlook email account to link in two clicks and start organizing and drafting in minutes

Deployment & Requirements

• Self-hosting requires Docker and Node.js v24 or later
• Self-hosting via the CLI prerequisites are Docker and Node.js v24+; complete self-hosting instructions, production deployment, OAuth setup, and configuration options are in the Self-Hosting Docs
• Inbox Zero supports Gmail, Google Workspace, and Microsoft Outlook email accounts
• The iOS App Store app can connect to your own server URL if you self-host

Before You Adopt

• License: Other. Review its terms before using, modifying, or distributing the project.
• The Android app is described as an older React Native app and is due for an update, so Android users may not have parity with the iOS app.
• The iPhone app is not currently open source, though the project says it plans to open it; the AI assistant, web app, and desktop email app are open source.
• Starting the AI assistant trial requires a credit card even though the email app itself is free to use.