by Shortwave Inc.
Shortwave is an AI-powered Gmail client that replaces the standard Gmail interface with intelligent inbox management. It bundles related emails, generates instant AI thread summaries, suggests smart replies, and features an AI assistant that can search and act across your entire inbox using natural language.
Heads up — Gmail only: Shortwave works exclusively with Google Gmail and Google Workspace accounts. If your team uses Outlook, Microsoft 365, or a custom IMAP provider, Shortwave is not compatible. For Gmail-centric organizations, however, it is one of the most compelling AI inbox upgrades available in 2026.
Shortwave is a full replacement for the Gmail web interface. Instead of simply layering a Chrome extension on top of Gmail, Shortwave is a standalone web application (and iOS app) that connects to your Google account via OAuth, reads and writes emails through the Gmail API, and presents your inbox through its own intelligent, AI-driven UI.
The company was founded by ex-Google engineers who worked on Google Inbox — the beloved, since-discontinued Gmail alternative that pioneered email bundling and smart replies back in 2014. When Google shut down Inbox in 2019, millions of power users were left without its signature features. Shortwave is, in many ways, the spiritual successor to Google Inbox, rebuilt with 2025–2026-era AI capabilities at its core.
2025–2026 AI Update: Shortwave's AI assistant was upgraded to support multi-step inbox actions — you can ask "Find all unread emails from investors this month and summarize them" or "Draft a reply to the last email from my accountant saying I'll send the documents by Friday" and the AI handles the full chain. Natural language search now spans attachments and embedded content, not just subject lines and bodies.
The core philosophy is simple: your inbox should feel calm, organized, and intelligent by default — not a torrent of undifferentiated messages requiring manual triage. Shortwave achieves this through three pillars: smart bundling that collapses related emails into logical groups, AI summarization that tells you what a thread is about without making you read it, and an AI assistant that can answer questions about your inbox and take actions on your behalf.
Your emails remain safely in Gmail at all times. Shortwave is a presentation and interaction layer — nothing is stored separately on Shortwave's servers beyond the AI model context needed to generate responses. You can disconnect and return to standard Gmail at any time without any data loss.
Shortwave automatically groups related emails into smart bundles — newsletters go together, notifications from the same app stack into one card, and conversation threads collapse cleanly. Your inbox goes from hundreds of individual messages to a scannable list of logical groups. You can create custom bundles and train the AI on your own categorization preferences over time.
Click the "Summarize" button on any email thread and Shortwave's AI generates a concise, accurate summary of the full conversation — including decisions made, action items called out, and key context. Long threads that would take five minutes to read are distilled in seconds. Summaries are generated on-demand and are never pre-computed, so they reflect the latest messages.
Shortwave offers contextual reply suggestions that understand the full thread before proposing a response. Click a suggestion to insert it into the compose window, then edit freely before sending. For more complex replies, type a brief instruction like "Decline politely, mention schedule conflict" and the AI drafts a complete professional response matching the tone and formality of the thread.
The AI assistant is accessible via a persistent chat panel within Shortwave. Ask it questions across your full inbox: "What's the status of the Q2 contract with Acme Corp?", "Are there any emails I haven't replied to from last week?", or "List all emails containing invoices from March." The assistant reads your inbox in real-time, synthesizes answers, and can draft and schedule actions — all without leaving Shortwave.
Type a plain-English question into Shortwave's search bar instead of Gmail's query syntax. "Emails about the redesign project from Sarah in Q1" instantly filters to the right results. The AI understands semantic meaning, not just keywords — so "budget discussions" finds financial threads even if they never use the word "budget." Search also covers attachment content indexed by Google Drive integration.
Shortwave integrates with Google Calendar so you can see event details inline within email threads — no switching tabs when a meeting invitation or scheduling email arrives. Tasks can be created directly from email content via the AI: highlight a sentence like "Please send the report by Friday" and Shortwave offers to create a Google Task or Calendar reminder with one click.
The AI assistant is what sets Shortwave apart from traditional email clients and even from lightweight AI add-ons. Unlike a sidebar chatbot that can only summarize the currently open email, Shortwave's assistant has indexed access to your full inbox and can reason across weeks or months of email history.
In practice, this means you can use it as a knowledge base: if you forgot what a client's shipping address is, ask the assistant. If you need to know who introduced you to a certain investor, ask the assistant. If you want to draft a status update based on all emails received from a specific project in the past 30 days, the assistant can compile that information and write the update. It behaves less like a chatbot and more like a capable EA who has read everything in your inbox.
Thread summaries are consistently accurate; AI assistant handles complex multi-step queries reliably
Near-seamless sync with Gmail; labels, stars, filters, and archive all work as expected
Clean, modern design with well-considered keyboard shortcuts; minor learning curve from Gmail habits
iOS app is capable and fast; AI features mostly present; no Android app as of mid-2026
Free plan is genuinely generous; Pro at $9/mo is competitive vs Superhuman's $30/mo
| Plan | Price | AI Features | Best For |
|---|---|---|---|
| Free | $0 / month | Unlimited AI thread summaries, email bundling, smart reply suggestions, basic natural language search | Individuals, students, freelancers wanting a smarter Gmail interface |
| Pro ⭐ | $9 / month | Full AI assistant (multi-step inbox queries), advanced natural language search, AI reply drafting, priority support, 1 Google account | Busy professionals, founders, sales reps, anyone drowning in email |
| Business | $25 / user / month | Everything in Pro plus shared team inboxes, admin controls, team bundling rules, SSO, centralized billing, usage analytics | Sales teams, customer success teams, startups with shared email workflows |
Annual billing is available with a discount of approximately 17% on paid plans. The Free plan does not have usage limits on AI summaries — a genuinely rare offer in the AI productivity space. Pro and Business plans include a 14-day free trial.
Value comparison: At $9/month, Shortwave Pro delivers AI inbox management at roughly one-third the cost of Superhuman ($30/month). The key trade-off is that Shortwave lacks Superhuman's sub-100ms load-time engineering and keyboard-first philosophy — but for users who prioritize AI-driven email understanding over raw speed, Shortwave is the more cost-effective choice.
If your inbox receives 80+ emails per day and you spend more than 90 minutes managing email, Shortwave's bundling and AI summaries can reclaim that time. Executives who need to stay informed without reading every thread will find the AI summary feature transformative — skim 50 threads in the time it normally takes to read three.
Early-stage founders often use email as their primary communication channel with investors, customers, advisors, and contractors — all in the same inbox. Shortwave's bundling and AI assistant help separate signal from noise, surface important follow-ups, and draft professional responses even during the chaos of building a company.
Sales teams on Gmail benefit enormously from Shortwave's natural language search and AI reply drafting. Finding "all follow-up emails from enterprise prospects in Q2" takes seconds. Drafting a warm follow-up to a cold lead takes one click. For teams not ready to pay Superhuman-level prices, Shortwave Business is a compelling alternative.
If your inbox anxiety comes from sheer volume — newsletters, notifications, automated emails, and actual human messages all mixed together — Shortwave's bundling alone will provide immediate relief. The free plan covers this use case fully. Users who upgrade to Pro gain the AI assistant for truly intelligent inbox navigation.
Shortwave is not ideal for users who rely on Outlook or Microsoft 365, for organizations that require advanced Gmail admin delegation features, for users who prefer a heavy keyboard-shortcut workflow (Superhuman is better here), or for Android users who need a mobile-parity experience. Teams that require enterprise compliance, eDiscovery, or legal hold capabilities should evaluate whether Shortwave's access model meets those requirements before adopting it at scale.
| Feature | Shortwave | Superhuman | HEY Email | Gmail Native |
|---|---|---|---|---|
| AI thread summaries | ✓ Unlimited (free) | ✓ (paid) | ✗ | Limited |
| AI reply drafting | ✓ Pro+ | ✓ Excellent | ✗ | Basic (Gemini) |
| Email bundling | ✓ Smart AI bundles | Manual categories | ✓ The Screener | Basic tabs |
| AI inbox assistant | ✓ Full (Pro) | Limited | ✗ | Gemini sidebar |
| Natural language search | ✓ Excellent | ✓ Good | ✗ | Basic |
| Gmail support | ✓ | ✓ | ✗ Own email only | ✓ Native |
| Outlook support | ✗ | ✓ | ✗ | N/A |
| Read receipts | ✗ | ✓ Detailed | ✗ | ✗ |
| Mobile app | iOS only | iOS + Android | iOS + Android | iOS + Android |
| Free plan | ✓ Generous | ✗ | ✗ $99/year min | ✓ Free |
| Starting price | $0 / $9/mo | $30/user/mo | $99/year | Free |
Superhuman and Shortwave target adjacent but distinct users. Superhuman is built for keyboard-obsessed email power users who want sub-100ms response times and are happy to pay $30/month for the fastest possible email experience. Shortwave is built for users who want AI-driven intelligence — understanding, search, and drafting — at an accessible price point, and who are less focused on raw speed.
If you send 150+ emails per day and have memorized keyboard shortcuts, Superhuman is probably worth its price premium. If you want to use AI to understand and manage your inbox more intelligently without paying executive-pricing, Shortwave — especially at $9/month — is the stronger value proposition.
Shortwave is one of the most thoughtfully designed AI email tools available for Gmail users in 2026. The combination of smart email bundling, unlimited free AI summaries, contextual reply drafting, and an AI assistant that actually understands your full inbox represents a genuinely meaningful upgrade over default Gmail — and it is available at a price that most professionals can justify without a budget approval process.
The Gmail-only limitation is real and worth calling out clearly. If your organization is on Microsoft 365, Shortwave simply cannot help you. But for Gmail-centric individuals and teams, especially those already spending hours per week on email, Shortwave can meaningfully reduce that burden.
Recommended for: Gmail users managing high email volume, founders, sales professionals, remote teams, customer success roles, and anyone who has always wanted Google Inbox's bundling back — supercharged with 2026-era AI.
Start with the free plan. The unlimited AI summaries alone make it worth the 2-minute setup. If you use it daily for a week, upgrading to Pro at $9/month is an easy decision.
Yes. Shortwave supports both personal Gmail accounts (@gmail.com) and Google Workspace accounts (custom domains managed through Google). It connects via Google OAuth — you grant Shortwave access to read and write emails through the Gmail API, and all email data remains stored in your Gmail account. Shortwave does not support Outlook, Microsoft 365, Yahoo, Fastmail, ProtonMail, or any IMAP-based email provider.
Shortwave's free plan includes unlimited AI thread summaries, email bundling and smart grouping, basic smart reply suggestions, natural language search (with some limitations on depth and history), and access to the web app and iOS app. The free plan does not include the full AI assistant (multi-step inbox queries), advanced reply drafting from natural language prompts, or priority support. It is, however, among the most generous free tiers in AI email tools — most competitors charge for everything.
Shortwave accesses your Gmail account via Google's official OAuth and Gmail API. Your emails are not permanently stored on Shortwave's servers — they are fetched in real-time to generate AI responses and summaries. Shortwave complies with Google's API Services User Data Policy, which restricts how apps can use Gmail data. The company publishes a detailed privacy policy and has completed third-party security audits. You can revoke Shortwave's access at any time from your Google account's connected apps settings, and your emails will remain untouched in Gmail.
Gmail's Gemini integration (available in Google Workspace plans starting at $10/user/month with the Gemini add-on) offers a sidebar assistant that can summarize emails and draft replies. Shortwave's AI goes further in several ways: it offers a purpose-built bundling system that Gemini does not replicate, its AI assistant can reason across your entire inbox history rather than just the open email, natural language search is more deeply integrated, and the overall UX is designed from the ground up around AI-first inbox management rather than bolted onto existing Gmail UI. For Gmail-only AI features at no extra cost, Shortwave's free plan often outperforms Gemini's inbox features for email management specifically.
No. Shortwave's AI assistant can draft emails and schedule them in a queue, but it does not send emails autonomously without your confirmation. Every AI-drafted reply or new email is presented in the compose window for your review before sending. This is a deliberate design choice — Shortwave positions itself as an AI assistant that amplifies your judgment, not an autonomous agent that acts without oversight. The "schedule send" feature queues emails at your chosen time, but you must explicitly approve the draft before it enters the schedule.
