# Inbox Zero vs Write Mail AI

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

| Metric | [Inbox Zero](https://openaitools.app/tool/inbox-zero) | [Write Mail AI](https://openaitools.app/tool/write-mail-ai) |
| :--- | :--- | :--- |
| Website URL | https://www.getinboxzero.com | https://writemailai.com |
| Categories | AI Email Assistant, AI Assistant, AI Productivity Tools, AI Email Writer | AI Email Generator, AI Email Assistant, AI Email Writer, AI Reply |
| Pricing Model | Freemium, Free Trial | Free |
| 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 | 0 |
| 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)

## Write Mail AI

Write Mail AI is a free, browser-based assistant focused entirely on email. It bundles three related tools into one page: an email generator that turns a few key points into a full draft, an analyzer that reads an email you paste in, and a reply tool that suggests a response to a message you received. Because it is purpose-built for email, it avoids the extra setup that general writing assistants often require.

Using it is straightforward. You pick a tab for the task you want, fill in the key points and optional settings such as tone, language, and response length, then read and copy the generated result. The site explicitly describes itself as a helper that speeds up human writing rather than a replacement, and it advises reviewing and comparing several generated drafts before sending anything.

The service is designed to work on both desktop and mobile, and its core features are usable without logging in. A free account is offered mainly to lift input limits and shorten response times. It is a practical choice for anyone who writes many routine emails and wants a quick first draft they can then personalize.

**Pricing & Plans:** Free. All core features are available without payment or login. A free account raises the input character limit and reduces the response timeout; no paid plans are advertised.

- **AI email generation:** Provide a few key points and optional tone and language settings and get a complete email draft ready to edit.
- **Email analysis:** Paste an email to have the assistant analyze its content, intent, or sentiment before you respond.
- **Smart reply drafting:** Drop in a message you received and get a suggested reply that you can adjust before sending.
- **Tone, language, and length controls:** Choose the language, tone, and response length (small, medium, or big) to control how the generated email reads.
- **Free to use, no login needed:** Core features work without an account; creating a free account raises character limits and speeds up generation.

**Strengths:** Completely free with no login required for core features; Combines generating, analyzing, and replying to emails in one tool; Works on both desktop and mobile browsers; Lets you control tone, language, and response length

**Limitations:** Free tier input is capped (around 1000 characters) with 12-second timeouts; No paid or advanced integrations with mail clients; it is copy-paste only; Output should always be reviewed and edited before sending; Requires removing sensitive information before pasting content

[Profile (Markdown)](https://openaitools.app/tool/write-mail-ai.md)

## Frequently Asked Questions

### How do Inbox Zero and Write Mail AI compare in monthly traffic?

Inbox Zero has 89,348 monthly visits, while Write Mail AI 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%; Write Mail AI 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. Write Mail AI: Free. Free. All core features are available without payment or login. A free account raises the input character limit and reduces the response timeout; no paid plans are advertised.

## 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-write-mail-ai

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