⚡Stack Radar

Inbox Cleanup & Email Filtering · Reviewed 27 Oct 2026

Inbox Zero

Open-source AI email assistant for Gmail and Outlook.

from $20 · free tier · getinboxzero.com ↗

Paid against free › Inbox Cleanup & Email Filtering › Inbox Zero

Inbox Zero at a glance
83.7KEstimated total trafficModeled monthly visits4.4KRanking keywordsPublic search sample97/100Technical health15 pages checked0Referring domainsLive backlink summary

Overview

01

Summary

The useful answer before the supporting detail.

Inbox Zero is an open-source AI email assistant that helps users reach inbox zero faster by automating routine email tasks S1. It is built for founders, operators, and professionals who receive more email than they can handle manually S1. The assistant connects to Gmail, Google Workspace, or Microsoft Outlook to draft replies, unsubscribe from newsletters, block cold emails, and provide analytics S1. Its practical value lies in reducing time spent on email management while keeping data private and not training AI on user data S7.

02

Product identity and positioning

Name, category, positioning, audience, and first-party claims.

  • Identity: Inbox Zero is an open-source AI email assistant S1.
  • Core purpose: Helps users reach inbox zero faster by automating email tasks S1.
  • Intended users: Founders, operators, and professionals overwhelmed by email S1.
  • Product scope: A web and desktop app with mobile app, connecting Gmail and Outlook S1 S7.
  • Positioning: An AI executive assistant that organizes inbox and calendar, drafts replies S7.
  • Claimed distinction: Open source with privacy-first approach, no AI training S7.
03

Use cases and audiences

Who the product serves and the jobs it is designed to handle.

AudiencePractical use case
Founders and operatorsAutomate routine email work to focus on core business tasks S1.
ExecutivesManage high email volumes without relying on an executive assistant S7.
Teams and growing businessesHandle high email volumes with team-wide analytics S7.
IndividualsClean up inbox and reduce email mess S7.

Features

09

Features and capabilities

Core functions and evidence-backed product capabilities.

CapabilityWhat it does
AI DraftingDrafts replies in the user's tone, ready for review and send S7.
Email AutomationUses plain-English rules to automate labels and actions S1.
Bulk UnsubscribeCleans newsletters with bulk unsubscribe S1.
Cold Email BlockingKeeps spammy cold outreach out of the inbox S1.
AnalyticsHighlights email volume and trends S1.
Calendar and CRM IntegrationConnects to calendar and CRM to draft emails based on schedule and customer data S7.
Multi-Platform AccessManage email from Slack, Telegram, Microsoft Teams, mobile, or web S7.
10

Integrations and ecosystem

Connected products, exports, APIs, and workflow compatibility.

Integration or interfaceTypeWhat it enables
GmailIntegrationConnect Gmail account to manage email S1.
Google WorkspaceIntegrationConnect Google Workspace account S1.
Microsoft OutlookIntegrationConnect Outlook account S1.
SlackIntegrationManage email from Slack workspace S107.
TelegramIntegrationManage email from Telegram S145.
Microsoft TeamsIntegrationManage email from Microsoft Teams (coming soon) S144.
CalendarIntegrationDraft emails based on schedule S7.
CRMIntegrationDraft emails based on customer data S7.

Pricing

11

Pricing and plans

Published plans, free access, trials, credits, and pricing limitations.

Plan or offerVerified price and billingIncludedLimits
Free$0 S85Email app free to use S85Not established
Starter$18 per user per month billed annually, $20 monthly S80AI drafts, sorted inbox S7Limited knowledge base S80
Plus$28 per user per month billed annually, $35 monthly S80Everything in Starter, plus digests, integrations S802 email accounts per user S80
Professional$42 per user per month billed annually, $50 monthly S80Everything in Plus, plus team analytics, priority support S80Not established
EnterpriseContact sales S80SSO, SCIM, on-premise deployment, dedicated support S80Not established

Competition

12

Competitive landscape

Domains competing for the same organic search demand.

Sampled competitors

CompetitorFirst-page appearancesSampled queriesAverage positionQueries observed
reddit.com223inbox zero, gmail filter not working
support.google.com216gmail filter not working
forbes.com111gmail filter not working
github.com112inbox zero
superhuman.com113inbox zero
youtube.com113gmail filter not working
missiveapp.com115inbox zero
justanswer.com115gmail filter not working
techtarget.com116inbox zero
pcmag.com116gmail filter not working

Website intelligence — Collected evidence

Customers, testimonials, and first-party review claims

Page typeEvidenceSource
customersLog inhttps://www.getinboxzero.com/customer-support
customersGet started freehttps://www.getinboxzero.com/customer-support
customersAI EMAIL ASSISTANT FOR SUPPORT TEAMShttps://www.getinboxzero.com/customer-support
customersDeliver exceptional support while AI manages the workloadhttps://www.getinboxzero.com/customer-support
customersTransform your customer support with an AI assistant that categorizes tickets, prioritizes urgent issues, and drafts professional responses automatically. Reduce response times and improve customer satisfaction.https://www.getinboxzero.com/customer-support
customersGet startedhttps://www.getinboxzero.com/customer-support
customersTalk to saleshttps://www.getinboxzero.com/customer-support
customersJoin 25,000+ professionals, including people at:https://www.getinboxzero.com/customer-support
customersNever let a customer issue go unnoticedhttps://www.getinboxzero.com/customer-support
customersOur AI monitors your support inbox 24/7, instantly identifying and prioritizing urgent issues, escalations, and VIP customer requests so your team can respond when it matters most.https://www.getinboxzero.com/customer-support
customersSupport that scales with your businesshttps://www.getinboxzero.com/customer-support
customersInbox Zero integrates seamlessly with your existing Gmail, so there's no learning curve. Just open your email and focus on solving customer problems while your AI email assistant handles the organization.https://www.getinboxzero.com/customer-support
customersDeliver world-class support at any scalehttps://www.getinboxzero.com/customer-support
customersInbox Zero learns your support processes and suggests quick responses for common issues, bug reports, and feature requests. Maintain high-quality support while handling more tickets with less effort.https://www.getinboxzero.com/customer-support
customersTurn support from cost center to competitive advantagehttps://www.getinboxzero.com/customer-support
customersFocus on solving problems, not managing emailshttps://www.getinboxzero.com/customer-support
customersAs your customer base grows, so does your support volume. Transform ticket chaos into organized efficiency so your team can deliver exceptional support without burning out.https://www.getinboxzero.com/customer-support
customersFrequently asked questionshttps://www.getinboxzero.com/customer-support
customersWhich email providers does Inbox Zero support?https://www.getinboxzero.com/customer-support
customersWe support Gmail, Google Workspace, and Microsoft Outlook email accounts.https://www.getinboxzero.com/customer-support

Independent review sources discovered

No links to supported independent review platforms were discovered on the collected pages.

13

AI visibility

Measured ChatGPT and Google AI mentions with cited sources.

AI-assistant referral traffic

  • Estimated current generative-AI referral share: 0.6%

Scout traffic model did not return a separate AI-referral trend series for this domain.

Website intelligence — Collected evidence

Site-stated AI capabilities

Page typeEvidenceSource
otherYour AI executive assistant to reach inbox zero fast. Automate emails, bulk unsubscribe, block cold emails, and analytics. Open-sourcehttps://www.getinboxzero.com/
identityAbout Inbox Zero, the open-source AI email assistant for labels, drafts, unsubscribe, cold email blocking, and analytics.https://www.getinboxzero.com/about
otherYour data stays private — no AI training, no funny business. We’re fully certified for top-tier security, and you can even self-host Inbox Zero if you want total control.https://www.getinboxzero.com/
identityInbox Zero is an AI email assistant that helps you reach inbox zero faster. It organizes your inbox with smart labels, drafts replies in your voice, unsubscribes from unwanted mail in bulk, blocks cold emails, and shows analytics so you can see where your time goes.https://www.getinboxzero.com/about
identityInbox Zero is built for founders, operators, and professionals who get more email than they can reasonably handle by hand. If you want an AI assistant that labels, drafts, unsubscribes, and blocks cold email—without locking you into a closed inbox replacement—Inbox Zero is designed for that workflow.https://www.getinboxzero.com/about
pricingYes. The email app is free to use. The AI plans include a 7-day free trial.https://www.getinboxzero.com/pricing
integrationsInbox Zero needs a real Delete/Trash action in automation rules. Right now, the closest option is Mark Spam, but that is not the same thing, and it is not appropriate for many email types. Why this matters There are many emails I want removed from my inbox that are not actually spam, for example: newsletters I signed up for but do not want to keep low-value promo emails routine notifications internal operational noise low-priority alerts that should be discarded For these emails: Archive is not enough, because I do not want to keep them Mark Spam is wrong, because they are not spam and should not be treated that way What’s missing I need a rule action that does the equivalent of Gmail Move to Trash / Delete, separate from: Archive Mark Spam Mark Read Label Why the current setup breaks down At the moment, the workflow becomes: Inbox Zero identifies the email correctly But it cannot delete it properly So an external assistant has to delete it manually That defeats the point of automation. Request Please add a true Delete/Trash rule action that is available: in automation rules in AI-generated rules in programmatic / API-backed rule workflowshttps://inboxzero.featurebase.app/?dub_id=rJBT6OlGODhB1CwA
integrationsSelf-hosted Inbox Zero currently requires direct API keys for LLM providers. Users with existing subscriptions to Claude Max or ChatGPT Pro already have authenticated access to these models through OAuth, but Inbox Zero can't use those sessions. This forces users to create separate API keys and manage additional billing. Proposed solution: Support OAuth-based authentication for Anthropic and OpenAI as an alternative to API keys. Both providers are moving toward OAuth as a first-class auth method. Claude Code and other tools already use Anthropic OAuth. Supporting this would let self-hosted users point Inbox Zero at their existing subscriptions instead of paying separately for API access. Alternatives considered: Running a local proxy that translates OAuth tokens to API-key-style requests. It works but adds latency and maintenance overhead.https://inboxzero.featurebase.app/?dub_id=rJBT6OlGODhB1CwA
integrationsExpose writing style prompt so users can refine how the AI drafts replieshttps://inboxzero.featurebase.app/?dub_id=rJBT6OlGODhB1CwA
integrationsYour AI email assistant, now on iPhone and Android. Organize your inbox, draft replies in your voice, and reach inbox zero from anywhere.https://www.getinboxzero.com/app
integrationsAI Assistanthttps://www.getinboxzero.com/mobile-app
integrationsThe same AI assistant from the web app and Slack — now in your pocket.https://www.getinboxzero.com/mobile-app
integrationsAI that knows your emailhttps://www.getinboxzero.com/mobile-app
integrationsThe same AI assistant that powers the web app — integrated directly into your Slack workspace.https://www.getinboxzero.com/slack-integration
integrationsPreview AI-drafted replies before they go out. Edit, approve, or regenerate right in the thread.https://www.getinboxzero.com/slack-integration
customersAI EMAIL ASSISTANT FOR SUPPORT TEAMShttps://www.getinboxzero.com/customer-support
customersDeliver exceptional support while AI manages the workloadhttps://www.getinboxzero.com/customer-support
customersTransform your customer support with an AI assistant that categorizes tickets, prioritizes urgent issues, and drafts professional responses automatically. Reduce response times and improve customer satisfaction.https://www.getinboxzero.com/customer-support
customersOur AI monitors your support inbox 24/7, instantly identifying and prioritizing urgent issues, escalations, and VIP customer requests so your team can respond when it matters most.https://www.getinboxzero.com/customer-support
customersInbox Zero integrates seamlessly with your existing Gmail, so there's no learning curve. Just open your email and focus on solving customer problems while your AI email assistant handles the organization.https://www.getinboxzero.com/customer-support

These are first-party product claims, not independent measurements of AI-search visibility.

14

Marketing opportunities

Actions calculated directly from the collected evidence.

OpportunityRecommended actionEvidence
Competitor gapReview the sampled queries where reddit.com appears.2 first-page appearances across inbox zero, gmail filter not working

Website intelligence — Collected evidence

Website evidence gaps

  • features: no usable public page was collected; verify whether the site publishes this evidence.
  • reviews: no usable public page was collected; verify whether the site publishes this evidence.
  • changes: no usable public page was collected; verify whether the site publishes this evidence.
  • technical: no usable public page was collected; verify whether the site publishes this evidence.

Trust and proof

15

Customers, proof, and reviews

Published proof, customer signals, and review evidence.

Independent reviews

PlatformPageHow it was foundNote
Product HuntInbox Zero ReviewsGrounded web search### The community submitted 14 reviews to tell us what they like about Inbox Zero, what Inbox Zero can do better, and more. ... Reviewers mostly see Inbox Zero as a simple, effective way to clear long-neglected inboxes, especially by finding and unsubscribing from old mailing lists. Users repeatedly praise the clean UX, straightforward setup, and time savings, with several saying it helped them clean years of email in just a few clicks. One reviewer also liked being able to read all messages fro
ListiclerInbox Zero Review: Open-source AI email assistant for GmailGrounded web search### Cons - Gmail/Google Workspace only — no Outlook support yet - Requires technical comfort to self-host (Postgres, OAuth setup) - Younger product — fewer years of refinement than SaneBox or Mailstrom
hunted.spaceInbox Zero - Open-source Superhuman alternative / Product Hunt Launch OverviewGrounded web searchInbox Zero launched on Product Hunt on October 18th, 2026 and earned 357 upvotes and 30 comments, earning #1 Product of the Day. Inbox Zero Mail is an open-source email client for Gmail and Outlook. Fast, keyboard-first, and free to use, on web, Mac, Windows and iPhone, with all your accounts in one inbox. Add AI for $20/mo: every email is sorted, and replies are drafted in your voice before you open them. Comment privately with your team, get Slack alerts, and give the AI context from your tool

Customer proof

Proof typeNamed customer or sourceEvidence
Review profileEliecustomer case study — From the very beginning, I set up a waitlist, and I had around 150 people signed up before fully releasing the product. (How I Built a $10K/month AI App for Email - Starter Story)

Independent mentions

  • Show HN: Inbox Zero – open-source email assistant — Show HN: Inbox Zero – open-source email assistant (getinboxzero.com) 167 points by elieskilled on Dec 29, 2023 / hide / past / favorite / 143 comments ... producthunt, nor that the testimonials are all from public sources. I get being skeptical; my
  • elie222/inbox-zero — . Chat with it from Slack or Telegram to manage your inbox on the go. Open source alternative to Fyxer, but more customizable and secure. We also offer an email app, an open source alternative to Superhuman.
  • Inbox Zero — for Gmail and Outlook. It organizes your inbox with AI labels and rules, drafts replies in your voice, blocks cold emails, bulk-unsubscribes from newsletters, surfaces email analytics, and works from Slack or Telegram so you can reach inbox zero faster.

External links were grounded in one live web search. Search snippets are leads, not independently scraped page content; rejected links remain available in Review evidence.

16

Company, security, and trust

Ownership, policies, security signals, and public trust evidence.

SignalFindingSource
Company and ownershipMaybe is a personal finance app that was founded in 2021. They raised money and put $1m into developing the product, but they weren’t able to make it work. So they shut it down.source
Contact and supportQuestions, feedback, or support requests: email support@getinboxzero.com. You can also visit our support, privacy, and terms pages.source
Legal and privacyNo hidden fees. Cancel anytime.source
Security and complianceEnterprise-grade security. SOC 2 Type 2 certifiedsource
Uptime and status pageNot published on the collected pages.—
Domain registered2023-07-03—
Domain expires2028-07-03—

Not found on the collected pages: uptime and status page. This only means Scout did not find it on the pages it read; it says nothing about the company itself.

17

Documentation and product updates

Help resources, product guidance, and visible changes over time.

Resource or updateTypeWhat is availableDate or freshness
Product FAQFAQAnswers common product, workflow, pricing, privacy, ownership, API, and team questions. (source)Not dated
15 of The Best Email Apps & How to Choose The Best FitGuideDiscover 15 of the best email apps and find the perfect one for your needs. Compare features, benefits, and tips for choosing the best fit. (source)Not dated
16 Best Email Management Apps and How to Choose The Right OneGuideDiscover the 16 best email management apps to streamline your inbox and boost productivity. Find the perfect solution for your needs today. (source)Not dated

Not found in the collected public sources: public roadmap, changelog or release notes, status page, separate help center or knowledge base.

Technical

18

Technical and delivery signals

Delivery model, platforms, API, data ownership, reliability claims and release activity.

SignalFindingSource
Delivery model (cloud, self-hosted, desktop, browser extension)Available as web app, desktop app, and self-hosted S7 S161.S7 S161
Platforms and appsWeb, Mac, Windows, and iPhone S7.S7
API and extensibility (API, SDK, webhooks, MCP, plugins)Not published on the collected pages.—
Data ownership and exportData stays private, no AI training S7.S7
Performance and reliability claimsNot published on the collected pages.—
Release activityNot published on the collected pages.—
19

Measured infrastructure

Domain, certificate, and hosting signals, measured directly.

SignalFinding
Domain registered2023-07-03 — Cloudflare, Inc.
Domain expires2028-07-03
First archived2013-05-30 — web archive
TLS certificateLet's Encrypt, valid, expires 2026-11-29
Security headersHSTS, CSP, X-Content-Type-Options, X-Frame-Options, Referrer-Policy
Server headerVercel
Mail handled byaspmx.l.google.com, alt1.aspmx.l.google.com
Nameserverspriscilla.ns.cloudflare.com, algin.ns.cloudflare.com
20

Technical site audit

A bounded multi-page crawl with page-level issues and URLs.

Scout — Bounded technical crawl

  • Pages crawled: 15 of 15 maximum
  • Technical health: 97/100
  • Critical issues: 0
  • Warnings: 7
  • Notices: 5

Issues

SeverityIssueValueAffected URL
noticeMeta description length should be reviewed205https://www.getinboxzero.com/enterprise
warningPage should have one primary H10https://www.getinboxzero.com/pricing
noticeMeta description length should be reviewed21https://www.getinboxzero.com/login
noticeLow visible word count61https://www.getinboxzero.com/login
warningTitle length should be reviewed138https://github.com/elie222/inbox-zero
warningMissing canonical URL—https://github.com/elie222/inbox-zero
noticeMeta description length should be reviewed254https://www.getinboxzero.com/email-client
noticeMeta description length should be reviewed225https://www.getinboxzero.com/ai-automation
warningDuplicate title in audit sample2https://www.getinboxzero.com/
warningDuplicate title in audit sample2https://www.getinboxzero.com/
warningDuplicate meta description in audit sample2https://www.getinboxzero.com/
warningDuplicate meta description in audit sample2https://www.getinboxzero.com/

Crawled pages

StatusTitleH1sWordsResponseURL
200Inbox Zero \Automate and clean your inbox1170866 ms
200Inbox Zero \Automate and clean your inbox1170852 ms
200AI Email Assistant for Enterprise \Inbox Zero1750204 ms
200Case Studies \Inbox Zero1406267 ms
200Inbox Zero \Pricing057362 ms
200Inbox Zero \Log in161121 ms
200Talk to Sales \Inbox Zero1874284 ms
200GitHub - elie222/inbox-zero: The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast. · GitHub114651,357 mshttps://github.com/elie222/inbox-zero
200Open-Source Email Client & App with AI \Inbox Zero11139289 ms
200Inbox Zero Mobile App for iOS \AI Email Assistant138937 ms
200AI Personal Assistant for Email \Inbox Zero11467302 ms
200Download Inbox Zero for Mac, Windows, and iPhone1230139 mshttps://www.getinboxzero.com/download
200AI Email Assistant for Slack, Telegram & Web \Inbox Zero1505200 ms
200Slack AI Email Assistant \Inbox Zero1177126 ms
200Telegram AI Email Assistant \Inbox Zero1153544 ms

This is a bounded Scout crawl. Core Web Vitals and Lighthouse scores are not claimed unless a dedicated performance audit is connected.

21

Search Console and Analytics

First-party search and behavioral data connection state.

Modeled acquisition channels

ChannelEstimated share
direct35.2%
search54.4%
search organic52.3%
search paid2.2%
social3.8%
social organic3.8%
social paid0.0%
referrals4.9%
paid referrals0.1%
mail0.9%
gen ai0.6%
affiliate0.1%
other0.0%

First-party connections

IntegrationStatusData available after connection
Google Search ConsoleNot connectedClicks, impressions, CTR, average position, queries, pages, countries, and devices
Google AnalyticsNot connectedOrganic sessions, engagement, landing pages, conversions, geography, and devices

No first-party Search Console or Analytics numbers are shown until the site owner authorizes the corresponding Google account. Scout traffic model values above are modeled estimates, not private analytics totals.

Limits and method

22

Limitations and open questions

Known constraints and missing evidence from the collected pages.

The collected pages do not mention specific competitors by name except Superhuman, which is compared in a dedicated pricing page S85. Evidence gaps include lack of detailed security certifications, uptime statistics, and API documentation. User feedback indicates missing features such as a delete/trash action in automation rules S15 and OAuth-based authentication for LLM providers S15.

23

Sources, method, and limitations

Evidence inventory, collection method, provider use, and constraints.

This report is based on 15 collected pages from getinboxzero.com, including the homepage, about, pricing, integration pages, and a blog post. Static and browser rendering providers were used, with partial rendering. External proof search was performed but no additional verification was completed. The evidence catalog includes 180 items, but only a subset was used due to relevance and duplication. Limitations include potential outdated pricing and unverified user testimonials.

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