# Inbox Zero

According to OpenAITools.app telemetry verified on 2026-11-11, Inbox Zero (getinboxzero.com) is an AI platform indexed under AI Email Assistant generating 89.35K monthly visits with a month-over-month traffic delta of +5.68K (+6.8%). Its primary geographic market is United States (43.3% traffic share), and it operates on a Freemium, Free Trial pricing model. Top competing alternatives by monthly volume include Replyless (2.72K visits/mo), Zero Inbox (2.11K visits/mo), Superhuman (6.51M visits/mo).

The AI email assistant that sorts your inbox and drafts replies in your voice

## Key Telemetry & Specifications

| Metric | Value |
| :--- | :--- |
| Tool Name | Inbox Zero |
| Handle | inbox-zero |
| Status | active |
| Origin | open_source |
| Maintenance | active |
| Official Domain | getinboxzero.com |
| Website URL | https://www.getinboxzero.com |
| Categories | AI Email Assistant, AI Assistant, AI Productivity Tools, AI Email Writer, Open Source AI Models |
| Pricing Model | Freemium, Free Trial |
| Monthly Visits | 89,348 |
| MoM Traffic Change | 5,676 |
| MoM Growth Rate | +6.8% |
| Primary Market | United States |
| Market Share | 43.3% |
| Direct Visits | 26,075 |
| Organic Search Visits | — |
| Social Visits | — |
| Referral Visits | 9,752 |
| Email Visits | 509 |
| Review Score | 4.4 |
| Saved Count | 6 |
| Supported Platforms | Website |
| Billing Platforms |  |
| Attributes | Features: Website; Pricing: Freemium; Pricing: Free Trial |
| Tags | Email management, AI automation, Email analytics, Bulk unsubscribe, Cold email blocker, Open source, Productivity, Gmail, Google Workspace, AI assistant |

## Overview

Inbox Zero is an AI executive assistant layered on top of Gmail and Outlook, built by developer Elie Steinbock (elie2222) and one of the most-starred open-source email projects on GitHub. Once you connect a Google or Microsoft account, it sorts incoming mail into smart categories such as To Reply, Newsletter, Marketing, Calendar, Cold Email and Notification, so you can triage by intent instead of scrolling chronologically. Every message that needs an answer arrives with a pre-written draft based on your past writing and your calendar availability, which you edit and send from the same view.

The tool is unusually broad for an email assistant. It blocks cold outreach before it reaches your inbox, shows you which senders you never open and lets you bulk-unsubscribe and archive them in a few clicks, and produces email analytics about who emails you most and what is clogging your inbox. Because it is open source and self-hostable, developers can inspect the code or run it on their own infrastructure — the company is SOC 2 Type 2 compliant and states your data is never used for AI training.

Inbox Zero also ships a dedicated email app for Gmail and Outlook across web, macOS, Windows and iPhone, is designed to be used from Slack, Telegram or Microsoft Teams, and offers AI meeting notes and pre-meeting briefings on higher tiers. The core app is free; the AI features are billed as a per-user subscription add-on.

## Pricing & Plans

Freemium with a 7-day free trial on paid tiers. The email app is free; AI plans are billed per user per month (roughly $20 for Starter, $28 for Plus and $40 for Professional on annual billing, with monthly options costing about 20% more). Enterprise pricing with SSO, SCIM and on-premise deployment is available on request.

## Key Features & Capabilities

- **Automatic inbox labelling:** Incoming mail is sorted into categories like To Reply, Newsletter, Cold Email, Calendar and Notification as it arrives, using default rules or categories you define yourself.
- **Pre-drafted replies:** Emails that need a response get a draft written in your tone and referencing your real calendar availability and CRM context, ready to review and send.
- **Cold email blocking and bulk unsubscribe:** Stop cold outreach from ever reaching the inbox, see which newsletters you never read, then unsubscribe and archive them in bulk.
- **Email analytics:** Dashboards reveal who emails you most, which senders dominate your inbox and how your habits change over time so you can act on it.
- **Open source and self-hostable:** The full codebase is public under an open licence, so teams can audit, extend or self-host it, with SOC 2 Type 2 compliance and no AI training on your data.

## Primary Use Cases

- **Reclaim an hour a day (Founder or executive):** Let the assistant triage hundreds of daily messages, arrive at a short To Reply list, and send AI drafts that sound like you rather than a template.
- **Replace a virtual assistant (Small business owner):** Handle customer enquiries, pre-meeting briefings and follow-ups without hiring someone just to keep the inbox under control.
- **Self-host your email AI (Developer or privacy-conscious team):** Run the open-source stack on your own infrastructure so no third party sees message content, while still getting labelling and drafting.
- **Cut newsletter noise (Operations lead):** Use analytics to spot senders you never open, then bulk-unsubscribe and archive so real work stops competing with promotional mail.

## Strengths

- Genuinely open source and self-hostable, unlike most AI email assistants
- Free core email app plus optional AI add-on keeps entry cost at zero
- Combines triage, drafting, unsubscribe, cold-email blocking and analytics in one tool
- Works across Slack, Telegram, Teams, web, desktop and mobile

## Limitations

- Best experience requires connecting Google or Microsoft account data
- Free tier excludes most AI features, which need a paid per-user plan
- Advanced tiers quickly get pricey for large teams

## Frequently Asked Questions

### Is Inbox Zero really free?
The email app itself is free and works on web, desktop and iPhone. The AI features — automatic labelling, drafting and analytics — are a paid per-user subscription, and there is a 7-day free trial.

### Which email providers does it support?
It connects to Gmail and Outlook, including Google Workspace and Microsoft 365 accounts, and can put multiple accounts in one inbox.

### Can I self-host Inbox Zero?
Yes. The project is open source, so you can deploy it on your own infrastructure. This is one of its main differentiators versus closed AI email tools.

### Does Inbox Zero train AI models on my email?
No. The company states your data is not used for AI training, and it is SOC 2 Type 2 certified.

### What is Inbox Zero's monthly traffic and growth trend?
Inbox Zero currently receives 89.35K monthly visits, with a month-over-month traffic change of +5.68K (+6.8% growth rate). Its primary source market is United States (43.3% share), including 26.08K direct visits/mo and — organic search visits/mo.

### Is Inbox Zero free? What is its pricing model?
Inbox Zero operates on a Freemium, Free Trial pricing model. Freemium with a 7-day free trial on paid tiers. The email app is free; AI plans are billed per user per month (roughly $20 for Starter, $28 for Plus and $40 for Professional on annual billing, with monthly options costing about 20% more). Enterprise pricing with SSO, SCIM and on-premise deployment is available on request. Supported billing and checkout platforms include: not listed.

### What are the best Inbox Zero alternatives in 2026?
Based on OpenAITools.app category traffic and feature fit, the top five alternatives to Inbox Zero are: 1. Replyless (2.72K visits/mo); 2. Zero Inbox (2.11K visits/mo); 3. Superhuman (6.51M visits/mo); 4. Spark Mail (435.23K visits/mo); 5. Inboxly AI (3.49K visits/mo).

### Which platforms and core AI capabilities does Inbox Zero support?
Inbox Zero is classified under AI Email Assistant, AI Assistant, AI Productivity Tools, AI Email Writer, supports the following platforms: Website, and its core capability tags include: Email management, AI automation, Email analytics, Bulk unsubscribe, Cold email blocker, Open source.

## Alternatives

| Tool Name | Monthly Visits | Pricing Model | Compare |
| :--- | :--- | :--- | :--- |
| [Replyless](https://openaitools.app/tool/replylessai) | 2,715 | Freemium | [Compare](https://openaitools.app/compare/inbox-zero-vs-replylessai) |
| [Zero Inbox](https://openaitools.app/tool/zeroinbox-ai) | 2,111 | Freemium | [Compare](https://openaitools.app/compare/inbox-zero-vs-zeroinbox-ai) |
| [Superhuman](https://openaitools.app/tool/superhuman) | 6,514,241 | Paid | [Compare](https://openaitools.app/compare/inbox-zero-vs-superhuman) |
| [Spark Mail](https://openaitools.app/tool/spark-mail) | 435,229 | Freemium, Free Trial | [Compare](https://openaitools.app/compare/inbox-zero-vs-spark-mail) |
| [Inboxly AI](https://openaitools.app/tool/inboxly-ai) | 3,493 | Paid | [Compare](https://openaitools.app/compare/inbox-zero-vs-inboxly-ai) |
| [Shortwave](https://openaitools.app/tool/shortwave) | 193,316 | Freemium, Free Trial | [Compare](https://openaitools.app/compare/inbox-zero-vs-shortwave) |
| [FiloMail](https://openaitools.app/tool/filo-mail) | 35,548 | Freemium | [Compare](https://openaitools.app/compare/filo-mail-vs-inbox-zero) |
| [Snoooz AI](https://openaitools.app/tool/snoooz-ai) | 10,998 | Free Trial, Contact for Pricing | [Compare](https://openaitools.app/compare/inbox-zero-vs-snoooz-ai) |
| [Ellie](https://openaitools.app/tool/tryellie-com) | 9,297 | Free Trial, Paid | [Compare](https://openaitools.app/compare/inbox-zero-vs-tryellie-com) |
| [Missive](https://openaitools.app/tool/missive) | 631,353 | Free Trial, Paid | [Compare](https://openaitools.app/compare/inbox-zero-vs-missive) |
| [BlueMail](https://openaitools.app/tool/bluemail) | 319,805 | Free | [Compare](https://openaitools.app/compare/bluemail-vs-inbox-zero) |
| [Fyxer](https://openaitools.app/tool/fyxer-ai-executive-assistant) | 298,288 | Free Trial, Paid | [Compare](https://openaitools.app/compare/fyxer-ai-executive-assistant-vs-inbox-zero) |

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Source: https://openaitools.app/tool/inbox-zero