Shortwave vs Inbox3: An AI Email Client or an AI Morning Briefing?
A detailed comparison of two different approaches to email management — updated for 2026.
What is Shortwave?
AI-powered email client built on Gmail
Shortwave is an AI-native email client built on top of Gmail by former Google engineers. It replaces the Gmail interface with a modern, fast client that includes AI features: email summaries, AI search, automated labeling, and an AI assistant that can answer questions about your inbox.
It's deeply integrated with Gmail — you keep your address, contacts, and history. The AI acts as a co-pilot while you work through your inbox, summarizing threads, suggesting actions, and helping you write replies.
Shortwave is free for personal use with a paid team plan for businesses.
What is Inbox3?
AI-curated email digest
Inbox3 is an AI-powered email digest that connects to your Gmail (read-only) and scans your inbox each morning. Instead of showing you everything, it surfaces just the 3–10 emails that genuinely need your attention — ranked by urgency, sender importance, and your personal patterns.
It's not a new email client. Your Gmail stays untouched. Inbox3 is an additive layer: a morning briefing that tells you what matters so you can skip the scroll and start your day with clarity.
Feature Comparison
Pricing
Inbox3
Free / $8/mo
Free plan with 3 items. Pro unlocks up to 10 items, unlimited drafts, sender intelligence.
Shortwave
Free (Teams from $14/mo)
Personal $7/mo, Gmail-based
Who Should Choose Shortwave?
Shortwave is ideal for people who want a better Gmail experience with AI baked in. If you like living in your email client and want AI to help you process faster, Shortwave is a strong choice.
Who Should Choose Inbox3?
Inbox3 is ideal if you don't want to live in your email client at all. Instead of making email-processing faster, Inbox3 eliminates the processing: here are your 3 essentials, handle them, move on.
The Bottom Line
Shortwave makes your email client smarter. Inbox3 makes your email client optional. Both use AI, but for fundamentally different purposes — Shortwave helps you work through all your email, Inbox3 tells you which email to work through.
If email is your workspace and you want AI assistance inside it, go with Shortwave. If email is a chore and you want AI to do the triage before you even open Gmail, Inbox3 is the better fit.
Other comparisons