# Inbox Zero vs Shortwave

Inbox Zero records 89,348 monthly visits with +6.8% month-over-month growth and Freemium, Free Trial pricing. Shortwave records 193,316 monthly visits with -5.1% growth and Freemium, Free Trial pricing.

| Metric | [Inbox Zero](https://openaitools.app/tool/inbox-zero) | [Shortwave](https://openaitools.app/tool/shortwave) |
| :--- | :--- | :--- |
| Website URL | https://www.getinboxzero.com | https://www.shortwave.com |
| Categories | AI Email Assistant, AI Assistant, AI Productivity Tools, AI Email Writer | AI Email Assistant, AI Email Writer, AI Summarizer, AI Agent |
| Pricing Model | Freemium, Free Trial | Freemium, Free Trial |
| Monthly Visits | 89,348 | 193,316 |
| MoM Growth Rate | +6.8% | -5.1% |
| Primary Market | United States | United States |
| Direct Visits | 26,075 | 155,928 |
| Review Score | 4.4 | 4.5 |
| Saved Count | 6 | 2 |
| 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)

## Shortwave

Shortwave was built by a team of ex-Googlers and is often described as the spiritual successor to Google Inbox. Its starting point is a faster, more organized inbox: tabs and bundles separate what matters from newsletters and promotions, emails convert into a prioritized to-do list, delivery schedules keep interruptions off your clock, and keyboard-first navigation keeps your hands off the mouse. Read receipts and link tracking add the context you normally only get from a sales tool.

The AI layer is where the product has moved furthest. Shortwave's agent works like an assistant inside the mailbox: give it a prompt and it will organize messages, draft replies in your own writing style, check availability and create calendar events, or analyze an entire team's mail and attachments to answer a question. AI filters written in plain English replace traditional rule builders, and autocomplete suggests real links, facts and phrases pulled from your own email history.

Team features address a familiar problem — discussing email in a separate chat app. Shared threads update in real time, teammates can leave private comments on a message, assignments create a clear owner, and shared labels build a common searchable archive. The platform reports CASA Tier 2 compliance, privacy features such as an image proxy and tracking-pixel blocking, and integrations with Slack, Notion, Asana, HubSpot and a sister product, Tasklet, for broader workflow automation. Clients are available for iOS, Android, Mac and Windows.

**Pricing & Plans:** Freemium with a free plan and no credit card required to start. Paid personal and business tiers unlock higher AI usage limits and advanced automation, including the Tasklet workflow product; a free trial is available.

- **Agentic AI assistant:** A conversational agent that organizes your inbox, identifies what matters, drafts replies, writes scheduling emails and runs multi-step workflows from a single prompt.
- **Automatic inbox organization:** Plain-language AI filters and scripts that automatically label, archive, star or sweep messages so you reach inbox zero faster.
- **AI search across email and files:** Ask questions in natural language and search across your own messages — or your whole team's emails and attachments — to get answers rather than links.
- **Real-time team collaboration:** Shared threads, private comments, assigned next steps and shared labels give a team one live view of important conversations.
- **Scheduling and follow-up tools:** Calendar checking, event creation, smart snooze suggestions, delivery schedules, link tracking and follow-up reminders all run inside the inbox.

**Strengths:** Genuinely agentic AI rather than a bolt-on summarize button; Collaboration features remove the need to paste screenshots into Slack; Keyboard-first, fast interface with a modern inbox layout; Broad integration set including Slack, Notion, Asana and HubSpot

**Limitations:** It is a full email client, so migrating means bringing your inbox and workflow with you; Advanced automation lives in paid tiers; Some features depend on connecting external tools like Slack, Notion and HubSpot; The feature set is deep enough that new users need time to learn the automation model

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

## Frequently Asked Questions

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

Inbox Zero has 89,348 monthly visits, while Shortwave has 193,316. 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%; Shortwave has -5.1%.

### 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. Shortwave: Freemium, Free Trial. Freemium with a free plan and no credit card required to start. Paid personal and business tiers unlock higher AI usage limits and advanced automation, including the Tasklet workflow product; a free trial is 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 | Lightning-fast email productivity suite with powerful AI triage and shortcuts, but carries a steep subscription price. | [.md](https://openaitools.app/tool/superhuman.md) |
| 2 | [Missive](https://openaitools.app/tool/missive) | 631,353 | +0.2% | Free Trial, Paid | Collaborative email client combining shared inboxes, team chat, and AI assistance for streamlined workflow management. | [.md](https://openaitools.app/tool/missive.md) |
| 3 | [Spark Mail](https://openaitools.app/tool/spark-mail) | 435,229 | -13.5% | Freemium, Free Trial | Feature-rich cross-platform email client with integrated AI summarization and writing tools across multiple devices. | [.md](https://openaitools.app/tool/spark-mail.md) |
| 4 | [Carly AI](https://openaitools.app/tool/carly-ai) | 340,001 | +1.5% | Freemium | Versatile AI assistant for inbox management and scheduling accessed directly via email, SMS, or WhatsApp. | [.md](https://openaitools.app/tool/carly-ai.md) |
| 5 | [BlueMail](https://openaitools.app/tool/bluemail) | 319,805 | -5.8% | Free | Privacy-focused email client featuring cross-platform support and a built-in generative AI assistant for drafts. | [.md](https://openaitools.app/tool/bluemail.md) |
| 6 | [Fyxer](https://openaitools.app/tool/fyxer-ai-executive-assistant) | 298,288 | -3.8% | Free Trial, Paid | Autonomous AI executive assistant handling complex email triaging, meeting notes, and calendar scheduling. | [.md](https://openaitools.app/tool/fyxer-ai-executive-assistant.md) |
| 7 | [Spike](https://openaitools.app/tool/spike) | 93,475 | -26.6% | Freemium | Transforms traditional email threads into conversational chat workspaces with integrated AI summaries and tasks. | [.md](https://openaitools.app/tool/spike.md) |
| 8 | [FiloMail](https://openaitools.app/tool/filo-mail) | 35,548 | -5.1% | Freemium | Multi-account AI email client that summarizes long threads and extracts actionable items automatically. | [.md](https://openaitools.app/tool/filo-mail.md) |
| 9 | [PolitePost](https://openaitools.app/tool/politepost) | 17,186 | -7.2% | Free | Free web-based tool that rewrites rough or emotional email drafts into polished, professional workplace messages. | [.md](https://openaitools.app/tool/politepost.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-shortwave

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