# Inbox Zero vs Mailr

Inbox Zero records 89,348 monthly visits with +6.8% month-over-month growth and Freemium, Free Trial pricing. Mailr records 0 monthly visits with 0% growth and Freemium pricing.

| Metric | [Inbox Zero](https://openaitools.app/tool/inbox-zero) | [Mailr](https://openaitools.app/tool/mailr) |
| :--- | :--- | :--- |
| Website URL | https://www.getinboxzero.com | https://mailr-ai.com |
| Categories | AI Email Assistant, AI Assistant, AI Productivity Tools, AI Email Writer | AI Email Assistant, AI Email Writer, AI Reply, AI Email Generator |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 89,348 | 0 |
| MoM Growth Rate | +6.8% | 0% |
| Primary Market | United States | Global |
| Direct Visits | 26,075 | 0 |
| Review Score | 4.4 | 3.8 |
| Saved Count | 6 | 1 |
| Supported Platforms | Website | Website |

## Inbox Zero

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.

- **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.

**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

[Profile (Markdown)](https://openaitools.app/tool/inbox-zero.md)

## Mailr

Mailr takes a deliberately narrow approach to AI email: instead of trying to manage your whole inbox, it handles the moment of composition. You give it a short instruction describing the goal of the message, select a tone from a set of over ten options, and it generates the email or reply for you to review and send. The extension lives in the browser, so drafting happens right where you are already reading mail.

The positioning is about time rather than automation. The site cites the familiar statistic that the average professional spends more than 2.5 hours per day on email, and frames click-to-draft generation as a way to reclaim most of that writing overhead without changing your workflow. Because tone is an explicit setting, the same underlying request can become a friendly check-in or a persuasive follow-up.

Mailr's site currently displays a notice that the product has been acquired by MailWiz, and the service continues to operate as a Chrome extension. Access is split into a free, permanently available tier with a 2,000 word limit and a premium tier at roughly $4.99 per month with a much larger word allowance, faster generation and early access to beta features.

**Pricing & Plans:** Freemium. The site lists a Free Forever tier at $0 that includes a 2,000 word limit, composing new emails, 10+ custom tones and signup, alongside a Premium tier at about $4.99 per month with 100,000+ words per month, faster email generation and early access to beta features. Higher-volume users are invited to contact the vendor.

- **Single-click draft generation:** Give Mailr a one-line instruction describing what the email needs to achieve and it produces a complete draft you can send or refine.
- **10+ tone presets:** Choose from more than ten tones including friendly, informal and persuasive so the same message can be pitched differently to different recipients.
- **In-browser Chrome extension:** Mailr works from the browser as a Chrome extension, so drafting happens next to the inbox instead of in a separate tab or app.
- **New emails and replies:** The assistant handles both brand new messages and replies, covering the two most repetitive writing tasks in a typical workday.
- **Tiered word allowances:** The free tier caps output at 2,000 words while premium raises the allowance past 100,000 words per month for faster generation and early access to beta features.

**Strengths:** Very low friction: one instruction plus a tone choice produces a usable draft; Free tier is genuinely usable, with premium at a low monthly price; Over ten tone presets cover most professional and casual contexts; Runs as a lightweight browser extension instead of a separate app

**Limitations:** Best suited to Chrome and Gmail-style workflows rather than a full multichannel inbox; The free tier's word limit is easy to exhaust with daily heavy use; Premium pricing is per month per user, which adds up for teams; Tone presets are useful but still need review before sending sensitive mail

[Profile (Markdown)](https://openaitools.app/tool/mailr.md)

## Frequently Asked Questions

### How do Inbox Zero and Mailr compare in monthly traffic?

Inbox Zero has 89,348 monthly visits, while Mailr has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Inbox Zero has a month-over-month growth rate of +6.8%; Mailr has 0%.

### How does pricing compare?

Inbox Zero: Freemium, Free Trial. 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. Mailr: Freemium. Freemium. The site lists a Free Forever tier at $0 that includes a 2,000 word limit, composing new emails, 10+ custom tones and signup, alongside a Premium tier at about $4.99 per month with 100,000+ words per month, faster email generation and early access to beta features. Higher-volume users are invited to contact the vendor.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Superhuman](https://openaitools.app/tool/superhuman) | 6,514,241 | +7.9% | Paid | The AI productivity suite with agents, email, and docs that work wherever you do | [.md](https://openaitools.app/tool/superhuman.md) |
| 2 | [Missive](https://openaitools.app/tool/missive) | 631,353 | +0.2% | Free Trial, Paid | Collaborative inbox and email management for teams | [.md](https://openaitools.app/tool/missive.md) |
| 3 | [Spark Mail](https://openaitools.app/tool/spark-mail) | 435,229 | -13.5% | Freemium, Free Trial | Smart, focused email with AI help — for individuals and teams | [.md](https://openaitools.app/tool/spark-mail.md) |
| 4 | [BlueMail](https://openaitools.app/tool/bluemail) | 319,805 | -5.8% | Free | A privacy-first email client with built-in AI writing help | [.md](https://openaitools.app/tool/bluemail.md) |
| 5 | [Fyxer](https://openaitools.app/tool/fyxer-ai-executive-assistant) | 298,288 | -3.8% | Free Trial, Paid | An AI executive assistant that works across your inbox, calendar and meetings | [.md](https://openaitools.app/tool/fyxer-ai-executive-assistant.md) |
| 6 | [Shortwave](https://openaitools.app/tool/shortwave) | 193,316 | -5.1% | Freemium, Free Trial | Automate your email with AI | [.md](https://openaitools.app/tool/shortwave.md) |
| 7 | [FiloMail](https://openaitools.app/tool/filo-mail) | 35,548 | -5.1% | Freemium | AI email client that turns your inbox into clear next steps | [.md](https://openaitools.app/tool/filo-mail.md) |
| 8 | [Friday: AI E-mail Writer](https://openaitools.app/tool/friday-ai-e-mail-writer) | 33,056 | +20.8% | Free Trial | Draft polished, on-tone emails in seconds with an AI writing assistant | [.md](https://openaitools.app/tool/friday-ai-e-mail-writer.md) |
| 9 | [Snoooz AI](https://openaitools.app/tool/snoooz-ai) | 10,998 | -31% | Free Trial, Contact for Pricing | The AI agent that runs your team's inbox | [.md](https://openaitools.app/tool/snoooz-ai.md) |
| 10 | [Ellie](https://openaitools.app/tool/tryellie-com) | 9,297 | -0.3% | Free Trial, Paid | Your inbox on autopilot — replies drafted overnight in your own voice. | [.md](https://openaitools.app/tool/tryellie-com.md) |

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Source: https://openaitools.app/compare/inbox-zero-vs-mailr

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