# Inbox Zero vs Replyless

Inbox Zero records 89,348 monthly visits with +6.8% month-over-month growth and Freemium, Free Trial pricing. Replyless records 2,715 monthly visits with +10.5% growth and Freemium pricing.

| Metric | [Inbox Zero](https://openaitools.app/tool/inbox-zero) | [Replyless](https://openaitools.app/tool/replylessai) |
| :--- | :--- | :--- |
| Website URL | https://www.getinboxzero.com | https://replyless.ai |
| Categories | AI Email Assistant, AI Assistant, AI Productivity Tools, AI Email Writer | AI Email Assistant, AI Email Writer, AI Writing Assistants, AI Productivity Tools |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 89,348 | 2,715 |
| MoM Growth Rate | +6.8% | +10.5% |
| Primary Market | United States | United States |
| Direct Visits | 26,075 | 1,068 |
| Review Score | 4.4 | 4.1 |
| 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)

## Replyless

Replyless takes a different angle from the usual "AI sidecar bolted onto Gmail." It is an AI-native email app in its own right, but it still sits on top of the mailbox you already use. Gmail, Outlook, and Zoho Mail accounts are connected and merged into one list, with actions syncing back to the provider so your mail is never locked in.

The core idea is forced clarity. Focus mode turns a single noisy inbox into two tabs: Primary for people and threads that need a reply, and Everything else for receipts, newsletters, and promotions. You can also create named views such as Clients, Newsletter, or Payments. Sorting corrects itself as you move things, and urgent emails are pushed to the top of each view. Pressing Command-K opens a command centre for jumping to a view, drafting a reply, or setting a reminder.

AI does the writing and the routine work. Replyless reads the entire thread before drafting an answer in your voice, learns from your edits, and keeps saved snippets ready in the compose toolbar. Beyond that, agents can run background jobs you describe in plain language - a morning digest of unread mail, calendar, and open loops, or pushing invoices to Slack or Notion. Replyless is available on web, macOS, iOS, and Android, keeps each account's data scoped to its own connection, and states that it is GDPR compliant. It is an independent product and is not endorsed by OpenAI, Anthropic, or Google.

**Pricing & Plans:** 7-day free trial of the full Basics plan, plus a free Cleaner tier. Basics is $15 per user/month (5,000 AI credits, unlimited connections and workflow runs) or $10.50/month billed yearly at 30% off. Pro is $30 per user/month for unlimited AI usage. A $299 one-time Lifetime plan and custom Enterprise pricing are also available.

- **Focus mode with two clear tabs:** Focus mode separates people and anything needing a reply into Primary, while receipts, updates, newsletters, and promotions wait in Everything else.
- **Drafts written from the whole thread:** Replyless reads the full conversation and writes a ready-to-send reply in your tone, which you can make warmer, shorter, or firmer with one tap.
- **Auto-labeling on arrival:** Every incoming email is read and labeled on arrival - leads, invoices, and support requests route themselves, and it remembers your corrections.
- **Named inbox categories:** Create custom tabs like Clients, Finance, or Payments with sender, domain, or subject-keyword rules, and urgent mail surfaces at the top.
- **Background agents and automations:** Describe a routine job in plain language - a morning brief, sending invoices to Slack - and an agent runs it in the background with your connected tools.

**Strengths:** Works on top of Gmail, Outlook, and Zoho Mail without moving your mail; Focus mode and custom views make triage fast; Draft replies are generated from the full thread and match your tone; Background agents automate recurring work

**Limitations:** Priced per user, which adds up quickly for larger teams; Basics tier caps AI usage at 5,000 credits per month; Email-centric workflow is a big change for people deeply attached to their native client; Zoho support exists but Gmail and Outlook have the richest feature coverage

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

## Frequently Asked Questions

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

Inbox Zero has 89,348 monthly visits, while Replyless has 2,715. 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%; Replyless has +10.5%.

### 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. Replyless: Freemium. 7-day free trial of the full Basics plan, plus a free Cleaner tier. Basics is $15 per user/month (5,000 AI credits, unlimited connections and workflow runs) or $10.50/month billed yearly at 30% off. Pro is $30 per user/month for unlimited AI usage. A $299 one-time Lifetime plan and custom Enterprise pricing are also available.

## 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 | [Spike](https://openaitools.app/tool/spike) | 93,475 | -26.6% | Freemium | AI-first email that turns your inbox into a chat-like workspace | [.md](https://openaitools.app/tool/spike.md) |
| 8 | [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) |
| 9 | [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) |
| 10 | [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) |

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

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