Inbox Zero

Open-source AI email assistant that organises your inbox and drafts replies

About Inbox Zero

Inbox Zero is an AI email assistant and email app that helps you reach inbox zero fast across Gmail, Google Workspace and Microsoft Outlook. It automatically labels and sorts every email into smart categories you can customise in plain English, pre-writes draft replies in your voice based on your email history and calendar, and lets you bulk unsubscribe and archive mail you never read.

Inbox Zero website preview

Live preview of getinboxzero.com via the WordPress mShots service — it can take a few seconds to generate on a first visit.

Inbox Zero: strengths & things to check

Strengths

Free tier available — you can start without paying (freemium model).
Covers email assistant, open source, gmail, outlook — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

The full feature set sits behind a paid plan — check which limits the free tier carries on the official site before committing.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 565 tools in the Communication & Collaboration category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

Inbox Zero pricing

Pricing model	Freemium — a free tier lets you start, and paid plans are available if you need more.
Free access	Yes — free tier, paid upgrades available
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	getinboxzero.com

Inbox Zero key facts

Category: Communication & Collaboration
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: email assistant, open source, gmail, outlook
Official site: getinboxzero.com

Inbox Zero FAQ

How much does Inbox Zero cost?

Freemium — a free tier lets you start, and paid plans are available if you need more. Current plans and prices are listed on the official site (getinboxzero.com).

What is Inbox Zero used for?

Open-source AI email assistant that organises your inbox and drafts replies Its focus areas in the Communication & Collaboration category: email assistant, open source, gmail, outlook.

Where can I try Inbox Zero?

On its official site, getinboxzero.com — the Visit Official Site button above goes straight there.

Inbox Zero vs alternatives

	Inbox Zero	HeyHelp	Akkoma	Apache OpenMeetings
Pricing	Freemium — a free tier lets you start, and paid plans are available if you need more.	Paid — this directory does not list a free tier for it.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas	email assistant, open source, gmail, outlook	gmail, email assistant, inbox, follow ups	fediverse, activitypub, microblogging, self hosted, open source	video conferencing, whiteboard, groupware, self hosted, open source
Official site	getinboxzero.com	heyhelp.ai	akkoma.social	openmeetings.apache.org
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Communication & Collaboration category

Chat, video meetings, and messaging apps that keep teams connected. The Communication & Collaboration category on Tools Hub currently lists 565 tools. Alongside Inbox Zero, it includes Smart Inbox, Wiserep AI, Hedy, Omnichat.

FreemiumCommunication & Collaborationemail-assistantopen-sourcegmailoutlook

Alternatives to Inbox Zero

Tools in the same Communication & Collaboration category that share focus areas with Inbox Zero — worth comparing before you commit:

Communication & Collaboration

HeyHelp

AI email assistant inside Gmail that saves hours weekly

Paidgmailemail-assistantinboxfollow-ups

Communication & Collaboration

Akkoma

Magically expressive federated social media server software

Freefediverseactivitypubmicrobloggingself-hosted

Communication & Collaboration

Apache OpenMeetings

Open-source video conferencing, whiteboard and groupware from Apache

Freevideo-conferencingwhiteboardgroupwareself-hosted

Communication & Collaboration

Asterisk

Open-source IP PBX, VoIP gateway and conference server framework

Freevoippbxsiptelephony

Communication & Collaboration

b1gMail

Self-hosted webmail solution that runs on ordinary PHP webspace

Freewebmailself-hostedphpopen-source

Communication & Collaboration

BigBlueButton

Virtual classroom platform built for online learning

Freevirtual-classroomeducationopen-sourcewebinars

More in Communication & Collaboration

Comparing tools in the Communication & Collaboration category? These related listings are worth a look: Smart Inbox — AI-powered inbox manager with kanban prioritisation and smart auto replies; Wiserep AI — AI voice agents for inbound and outbound business calls; Hedy — AI meeting assistant that coaches you in real time, no bot.