Shortwave
Shortwave is an AI-native Gmail client built by ex-Google engineers that bundles email into topic threads, offers an AI writing assistant with voice-matching, and a structured Inbox Zero workflow exclusively for Gmail and Google Workspace.
Our take
Shortwave is the strongest AI-native Gmail client for users who want writing assistance that actually sounds like them. The Ghostwriter feature analyzes your sent mail history and generates drafts in your voice — not a generic corporate tone. For Gmail power users who spend significant time composing email, this is a concrete time-saver.
The single hard constraint is Gmail lock-in. Shortwave connects exclusively to Gmail and Google Workspace via the Gmail API. If any of your accounts live outside Google, Shortwave cannot access them. This is a structural limit, not a missing feature.
What stands out
Ghostwriter voice-matching. Shortwave analyzes your sent emails to learn your vocabulary, sentence structure, and tone. Generated drafts are substantially less generic than those from tools using standard LLM prompts without personalization.
Tasklet automations. Launched October 2025, Tasklets connect your inbox to Slack, Notion, Asana, and HubSpot without switching apps. This turns email from a message repository into a workflow trigger surface.
Bundle view. Related emails are grouped into collapsible bundles by sender or topic. Unlike a priority inbox that hides messages, Bundle view makes everything visible while dramatically reducing perceived inbox density.
Where it falls short
The Gmail-only constraint is the decisive factor for most users. Beyond that, the structured Inbox Zero workflow is prescriptive — it works well for users who want guided triage, but can feel constraining for those who prefer a freeform inbox.
Who should pick Shortwave
Pick Shortwave if you use Gmail or Google Workspace exclusively, write a significant volume of email, and want an AI assistant that learns your voice. Skip it if any of your accounts are outside Google, or if you prefer a less structured inbox workflow.
References
- Shortwave product: shortwave.com
- Pricing: shortwave.com/pricing
- Tasklets announcement: shortwave.com/blog
Pros
- Ghostwriter voice-matching is the most accurate AI writing assistant in the Gmail-client category
- Built by ex-Google engineers who deeply understand the Gmail API — integrations are first-class, not workarounds
- Tasklet automations (October 2025) extend the inbox into a workflow hub for Slack, Notion, and Asana
- Bundle view reduces visual noise without hiding messages the way a priority inbox does
- Strong free tier for individual Gmail users who want AI-assisted drafting without paying
Cons
- Gmail and Google Workspace only — completely unusable for Outlook, Yahoo, IMAP, or any non-Google account
- Pricing has been inconsistent across third-party sources, suggesting it may change; always verify at shortwave.com
- AI features require active internet and cloud processing — no local privacy option
- The structured Inbox Zero workflow requires a behavior change; users who prefer a fluid inbox may find it constraining
- Team inboxes require the Business plan — individuals with shared addresses pay for features mostly useful to teams
Features
- AI Ghostwriter: learns your writing voice from sent emails and generates on-brand drafts
- Conversational AI Assistant with multi-step reasoning for search and triage
- Tasklet automation platform: connect inbox to Slack, Notion, Asana, and HubSpot (launched October 2025)
- Inbox Zero queue: a structured workflow for getting to zero messages each session
- Bundle view: groups related emails (newsletters, GitHub notifications, receipts) by sender or topic
- Natural language AI search ('emails about project X last month')
- Team inboxes for shared email addresses (Business plan)
- Snooze, pin, and archive actions
- Calendar event creation from email content
- Mobile apps for iOS and Android with full AI feature access
- Thread summarization for long email chains
- Priority support and onboarding for Business plan