Design, automate, and analyze email campaigns with drag-and-drop builders, AI editing, and real-time analytics.
5.2M visits/mo+4.7%#21 Business & Marketing
Inbox Zero
An open-source AI email assistant that labels messages, drafts replies in your voice, blocks cold email, and provides inbox analytics.
$20Starting price
84KMonthly visits
32Popularity
About Inbox Zero
Inbox Zero is a web-based AI email assistant designed for individuals, entrepreneurs, executives, and power users who aim to automate inbox cleanup and respond more efficiently without switching email clients. The tool uses AI to sort and label incoming mail, including newsletters and cold emails, with support for custom categories. It drafts replies in the user’s voice by generating pre-written responses based on email history and optional context from connected systems like calendars. Inbox Zero also offers bulk actions for inbox cleanup, such as one-click unsubscribe and archive workflows for newsletters and low-value senders. Additionally, it provides email analytics and pre-meeting briefings to highlight top senders, identify inbox bottlenecks, and offer meeting context. The platform is open-source, with code available on GitHub, and emphasizes a privacy-first approach with the option to self-host for teams seeking greater control over their data and infrastructure.
Key features
- AI sorting and labeling of incoming emails
- Reply drafting in the user’s voice
- Bulk actions for inbox cleanup (unsubscribe, archive)
- Email analytics and pre-meeting briefings
- Customizable email categories
- Open-source with GitHub availability
- Privacy-first approach
- Option to self-host for teams
- Integration with calendar and connected systems
Use cases
- Automating email replies for executives and entrepreneurs
- Cleaning up and organizing high-volume inboxes
- Generating meeting-ready email briefings
Pros
- Automatically organizes and labels emails into custom categories such as Newsletter, To Reply, Marketing, Calendar, Notification, Cold Email, Team, and Urgent.
- Drafts pre-written replies in the user’s tone based on email history and calendar context, reducing response time.
- Supports bulk actions like one-click unsubscribe and archive for newsletters and low-value senders to streamline inbox cleanup.
- Provides email analytics and pre-meeting briefings to highlight top senders and identify inbox bottlenecks.
- Offers privacy-first and open-source solutions, including SOC 2 Type 2 certification and the option to self-host for enhanced data control.
Cons
- May require initial setup and customization to align with individual or team workflows.
- Dependent on integration with email providers like Google or Microsoft, which could limit functionality for users with alternative email systems.
- Advanced features such as Slack integration and deeper knowledge base support are limited to higher-tier plans.
Frequently asked questions about Inbox Zero
What is Inbox Zero and who is it designed for?
Inbox Zero is an AI-powered email assistant that automates inbox organization, drafts replies in the user’s voice, and helps achieve inbox zero. It is designed for individuals, entrepreneurs, executives, power users, and teams who want to save time and manage emails more efficiently.
How does Inbox Zero work?
Inbox Zero connects to Gmail or Outlook, automatically categorizes emails into smart labels, and drafts replies based on email history and calendar context. It also offers bulk actions like unsubscribing and archiving, along with email analytics and pre-meeting briefings.
Does Inbox Zero support integrations with other tools?
Yes, Inbox Zero integrates with Slack and supports additional app integrations in its higher-tier plans. It also offers a web interface, mobile access, and upcoming iOS and Android apps for seamless workflow management.
Is Inbox Zero secure and private?
Inbox Zero emphasizes a privacy-first approach, is SOC 2 Type 2 certified, and offers self-hosting options for teams requiring greater data control. It does not use customer data for AI training.
Can I customize how Inbox Zero organizes my emails?
Yes, Inbox Zero allows users to customize categories and configure workflows in plain English to fit their specific needs. It also supports creating custom labels and rules for email organization.
How do I get started with Inbox Zero?
Getting started is simple: connect your Gmail or Outlook account in two clicks, and Inbox Zero will automatically set up smart categories and begin organizing your inbox. Pre-drafted replies and bulk actions are available immediately.
Inbox Zero traffic & engagement
getinboxzero.com · third-party estimates from Similarweb
Data as of Sep 2026Full AI website ranking →
Monthly visits · Sep 202684K-5.9% MoM12-month high 104K (Jun 2026)
Rank among AI websites#2,140▼ 56 vs last monthof 8,652 tools on aitoolnavio™
Top marketUnited States54.1%Top 5 countries bring 67% of visits
Average visit54sLonger than 58% of AI sites
Pages per visit2.65More than 73% of AI sites
Bounce rate46%Leave after one page · lower is better
Similarweb global rank#397,370#164,580 in United States
Traffic trend
Last 4 months · grows by one month every month
- Jun 2026104K
- Jul 202690K−13.6%
- Aug 202689K−1%
- Sep 202684K−5.9%
Top countries
Share of visits · estimated visits
Other countries: 32.6%
Compared with similar tools
Writing & Content · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.
