Prio vs Shortwave: AI chief of staff or AI email client?
Last updated May 6, 2026
The verdict
Shortwave is one of the best AI email clients shipping right now. Built by ex-Firebase founders, it sits on top of Gmail and adds AI summaries, threaded conversations, AI-drafted replies, instant search, scheduled send, and an AI assistant that can answer questions across your entire inbox. If your bottleneck is email and you want a beautiful, modern, AI-native email client to replace Gmail's UI, Shortwave is excellent. Prio is a different category. It's a chief of staff that handles email AND calendar, tasks, CRM, GitHub, Slack, scheduling negotiations, daily briefings, voice calls, and proactive insights. The email experience is functional but conversational rather than client-like. For founders who want one AI agent running their whole operating system — not just a better inbox — Prio covers ground Shortwave intentionally doesn't.
Feature comparison
| Feature | Prio | Shortwave | Edge |
|---|---|---|---|
| Email UX | Email handled through chat — triage, draft, archive happen in the conversation. Functional but not a dedicated email client | Beautiful AI-native email client replacing Gmail's UI. Bundles, AI summaries, threaded conversations, instant search, snooze, send later, read receipts | |
| AI assistant in inbox | Triage classifies emails (action / fyi / delegate / archive), auto-archives noise, drafts replies, tracks follow-ups, runs autonomous scheduling negotiations | Ghostwriter AI drafts in your voice, AI summaries on every thread, AI search across all email, AI assistant answers questions about your inbox | |
| Calendar management | Smart scheduling rules, travel buffers, location preferences, ghost-meeting detection, autonomous back-and-forth scheduling negotiation by email | Calendar integration for scheduling proposals via email. No standalone calendar UI | |
| Task management | Full task system with recurrence, priorities, AI-suggested tasks from conversations, inline action cards, delegation tracking | Convert emails into reminders. No standalone task system | |
| Web research | Built-in research agent (Vercel Sandbox + Tavily) with multi-step browsing, source synthesis, and SSE streaming | AI assistant can summarize email content. Not a research agent | |
| CRM + relationship intelligence | Auto-created contacts, relationship reminders, contact enrichment (Linkup), Attio CRM sync, year-over-year recall of past actions | Email-centric — no contacts CRM, no relationship reminders | |
| Integrations | Gmail, Calendar, Drive, Slack, Notion, GitHub, Attio, LinkedIn, Outlook, OneDrive, Granola, MCP servers | Gmail-focused. Slack and a handful of integrations for power users | |
| Daily briefing | AI-generated morning + evening briefings via Slack, push, email, iMessage with calendar, tasks, weather, top emails, anticipation insights | Daily AI summary of inbox available. Email-scoped | |
| Voice + phone | Browser voice agent, inbound phone agent, P0 ringer (Prio rings your iPhone via VoIP/CallKit on urgent items) | No voice features | |
| Speed + polish (email) | Web chat is fast but not a high-throughput email processor | Obsessively fast and polished. Keyboard shortcuts, instant search, optimistic UI |
Prio strengths
- Full chief-of-staff scope — email, calendar, tasks, CRM, research, voice, briefings
- Approval queue makes every outbound action auditable
- Deep integrations across the founder stack
- Proactive anticipation engine surfaces things before you ask
- EU data residency and GDPR compliance
Limitations
- Email experience less polished than a dedicated email client
- No keyboard-shortcut-driven inbox processing
- More setup than installing a single email app
Shortwave strengths
- Best-in-class AI-native email client experience
- Beautiful, fast UI replacing Gmail
- Ghostwriter drafts in your voice are genuinely impressive
- AI search across full inbox is excellent
Limitations
- Email-only — no task management, CRM, research, or voice features
- Doesn't help with calendar scheduling beyond proposals
- No daily briefing combining email, calendar, and tasks across domains
- Stays inside Gmail — doesn't cover Outlook
Pricing
Prio
Starter from €29/month, Pro at €79/month with full agent features.
Shortwave
Free tier with limited AI. Pro at $9/month, Premier at $29/month, Business at $40/month. AI usage scales with plan.
Who should use what
Choose Prio if...
Founders, operators, and CEOs who want one AI chief of staff running inbox, calendar, CRM, GitHub, Slack, and standups — with auditability and proactive insights.
Choose Shortwave if...
People whose primary pain is email volume and who want the best AI-native Gmail client. Best if email is genuinely your only bottleneck and you're happy keeping calendar, tasks, and CRM in other tools.
Frequently asked questions
Can I use Prio and Shortwave together?
Yes, and it's a strong combination. Use Shortwave as your email client for fast triage and reading, and Prio for AI orchestration across email + calendar + tasks + CRM + briefings. Both connect to Gmail independently.
Is Prio's email AI as good as Shortwave's?
For email-only AI features (in-thread summaries, ghost-written replies, AI search across inbox), Shortwave has the edge — it's purpose-built. Prio's email AI is solid (triage, auto-archive, drafting, follow-up tracking, autonomous scheduling negotiation) but operates through chat rather than inline in each thread.
Why pay for Prio when Shortwave is cheaper?
If email is your only problem, Shortwave is the better value. Prio is more expensive because it's a different product — it covers calendar, tasks, CRM, GitHub, Slack, voice calls, daily briefings, and proactive anticipation. Compare against the cost of those tools combined, not against an email client.
Does Prio have an iOS app like Shortwave?
Yes. Prio has a native iOS app with PushKit/CallKit support — it can ring you on your iPhone via VoIP for genuinely urgent items (P0 ringer) and supports voice agent calls in-app.
Which one is better for Gmail vs Outlook?
Shortwave is Gmail-only. Prio supports both Gmail and Outlook (via Microsoft Graph), plus Calendar, Drive, OneDrive, and Microsoft discovery for any Graph API method.
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