# Shortwave vs Sixty

Shortwave records 193,316 monthly visits with -5.1% month-over-month growth and Freemium, Free Trial pricing. Sixty records 0 monthly visits with -100% growth and Freemium pricing.

| Metric | [Shortwave](https://openaitools.app/tool/shortwave) | [Sixty](https://openaitools.app/tool/sixty) |
| :--- | :--- | :--- |
| Website URL | https://www.shortwave.com | https://www.sixty.app |
| Categories | AI Email Assistant, AI Email Writer, AI Summarizer, AI Agent | AI Assistant, AI Productivity Tools, AI Email Assistant |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 193,316 | 0 |
| MoM Growth Rate | -5.1% | -100% |
| Primary Market | United States | Global |
| Direct Visits | 155,928 | 0 |
| Review Score | 4.5 | 4.3 |
| Saved Count | 2 | 2 |
| Supported Platforms | Website | Website |

## 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)

## Sixty

Sixty was built around a simple thesis: modern knowledge workers are stuck in a technology-driven time crisis, buried in endless emails, nonstop notifications, false urgency and constant interruption. Its answer is an AI assistant that highlights what genuinely needs your attention and quietly handles the rest, so you can focus on the work and relationships that matter.

Practically, Sixty works as a layer over your inbox and calendar. It generates briefings before meetings by summarizing past interactions with the people involved, assembles customizable agendas for your day, week or even weekend, and triages email so the noise disappears. Alerts keep you informed of last-minute schedule changes and late notices, but deliberately only when they impact your day — the anti-notification design runs through the whole product. A people layer tracks your network and nudges you about birthdays and milestones.

The company is Sixty AI, Inc., founded by long-time Portland entrepreneur Mat Ellis. Sixty raised a $3.5 million seed round led by 468 Capital, with coverage in Axios Pro Rata, Fortune TermSheet, TechNews180 and Portland Inno. It also anchors the "Take Back Your Time" (#tbyt) movement, a campaign about changing attitudes and behaviors around time. Sixty is offered with both free and paid plans for individual professionals.

**Pricing & Plans:** Sixty offers both free and paid plans. You can sign up for free and upgrade to a paid tier for more capacity and features. Check the site for current plan details.

- **Meeting briefings:** Arrive at meetings prepared with a summary of all past interactions with the people involved, generated automatically before you join.
- **Daily agendas:** Get customizable snapshots of your day, week or even weekend schedule so you always know what is next without digging through a calendar.
- **Inbox triage:** Eliminate inbox noise and surface only the email that actually needs your attention, so your inbox reflects real priorities.
- **Smart alerts:** Receive instant notifications for last-minute schedule changes and late notices — but only when they genuinely impact your day.
- **Relationship and outreach reminders:** Never miss a birthday or milestone for anyone in your network, and send a thoughtful greeting or gift in a couple of clicks.

**Strengths:** Attack a real problem — communication overload rather than more task-tracker features; Meeting briefings built from past interactions genuinely reduce prep time; Notification design deliberately filters out anything that does not impact your day; Combines email, calendar and relationship management in one assistant

**Limitations:** Requires connecting email and calendar accounts, which some users may find privacy-sensitive; Value depends on consistent use — it works best as a daily hub, not an occasional tool; The 2023 copyright date suggests the product has not been actively refreshed recently; Feature set focuses on relationship and communication management rather than general task management

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

## Frequently Asked Questions

### How do Shortwave and Sixty compare in monthly traffic?

Shortwave has 193,316 monthly visits, while Sixty has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Shortwave has a month-over-month growth rate of -5.1%; Sixty has -100%.

### How does pricing compare?

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. Sixty: Freemium. Sixty offers both free and paid plans. You can sign up for free and upgrade to a paid tier for more capacity and features. Check the site for current plan details.

## 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 email client combining shared inboxes, team chat, and AI assistance for streamlined workflow management. | [.md](https://openaitools.app/tool/missive.md) |
| 3 | [Motion](https://openaitools.app/tool/usemotion-com) | 511,886 | -15.5% | Free Trial, Paid | The AI super app for work — tasks, projects, calendar and meetings in one place | [.md](https://openaitools.app/tool/usemotion-com.md) |
| 4 | [Town](https://openaitools.app/tool/town) | 472,909 | -12.8% | Freemium, Free Trial | An adaptive AI work assistant that learns how you work across inboxes, calendars, chats, and apps | [.md](https://openaitools.app/tool/town.md) |
| 5 | [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) |
| 6 | [Carly AI](https://openaitools.app/tool/carly-ai) | 340,001 | +1.5% | Freemium | Email an AI assistant and let it run your schedules, inbox and CRM | [.md](https://openaitools.app/tool/carly-ai.md) |
| 7 | [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) |
| 8 | [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) |
| 9 | [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) |
| 10 | [Inbox Zero](https://openaitools.app/tool/inbox-zero) | 89,348 | +6.8% | Freemium, Free Trial | The AI email assistant that sorts your inbox and drafts replies in your voice | [.md](https://openaitools.app/tool/inbox-zero.md) |

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Source: https://openaitools.app/compare/shortwave-vs-sixty

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