- Best for speed: Superhuman · Best AI-native (Gmail): Shortwave.
- Best drafts + meeting notes: Fyxer · Best free/built-in: Gemini in Gmail or Copilot in Outlook.
- An email client (Superhuman, Shortwave) speeds up doing email; a layer (Fyxer, SaneBox) automates it.
The best AI email assistants triage your inbox, draft replies in your voice, and pull out tasks — so you spend minutes on email instead of hours. This guide ranks the top tools for 2026 by what each does best, with real pricing.
Part of our AI marketing & productivity hub.
The best AI email assistants compared
| Tool | Best for | Free | Paid from |
|---|---|---|---|
| Superhuman | Pure speed (Gmail/Outlook) | Trial | ~$30/mo |
| Shortwave | AI-native Gmail client | Yes | ~$24/mo |
| Fyxer | Drafts + meeting notes | Trial | ~$30/mo |
| SaneBox | Filtering, works with any client | Trial | ~$7/mo |
| Gemini in Gmail | Free, built into Gmail | Yes | ~$20/mo |
| Copilot in Outlook | Built into Microsoft 365 | Yes | ~$30/mo |
Email client vs email layer
Two approaches. A new AI client (Superhuman, Shortwave) replaces your inbox with a faster, AI-powered interface. An AI layer (Fyxer, SaneBox) sits on top of Gmail or Outlook and automates sorting and drafting without changing your setup. Pick the client for a better experience, the layer for less disruption.
1. Superhuman — best for speed
Superhuman is the fastest-feeling email client, built around keyboard shortcuts, with AI drafting, summaries, and auto-labels included. Now part of the Superhuman/Grammarly suite. The pick if email speed is everything.
Best for: power users who live in email. Price: from ~$30/mo.
2. Shortwave — best AI-native Gmail client
Shortwave is an AI-first client for Gmail with thread summaries, Ghostwriter voice-matched drafts, natural-language search, and plain-English automations. The best pick if you live in Gmail and want deep AI.
Best for: Gmail users who want AI throughout. Price: free tier; from ~$24/mo.
3. Fyxer — best drafts + meeting notes
Fyxer sits on Gmail or Outlook, auto-sorts your inbox, drafts replies that learn your tone, and includes a meeting notetaker — email and meetings in one subscription. Sets up in seconds.
Best for: drafting plus meeting notes together. Price: trial; from ~$30/mo.
4. SaneBox — best filtering for any client
SaneBox works with any email provider and uses AI to filter unimportant mail into a separate folder, plus reminders and one-click unsubscribe. Cheap, invisible, and it just works.
Best for: taming a noisy inbox on any client. Price: from ~$7/mo.
5. Gemini in Gmail — best free & built-in
If you use Gmail, Google’s Gemini already drafts, summarizes threads, and answers questions about your inbox — no extra app. The obvious free-first choice for Google users.
Best for: Gmail users who won’t switch apps. Price: free tier; more with a Google AI plan.
6. Copilot in Outlook — best for Microsoft 365
Copilot drafts, summarizes, and coaches your tone right inside Outlook. The natural pick if your work lives in Microsoft 365.
Best for: Outlook and Microsoft 365 users. Price: with Copilot Pro ~$30/mo.
Best AI email assistant by need
- Fastest inbox: Superhuman.
- Gmail AI-native: Shortwave.
- Drafts + meetings: Fyxer.
- Just filter the noise: SaneBox.
- Free/built-in: Gemini (Gmail) or Copilot (Outlook).
Bottom line
Superhuman is the best AI email assistant for pure speed, Shortwave the best AI-native client for Gmail, and Fyxer the best if you want drafting plus meeting notes. Won’t switch apps? Gemini in Gmail or Copilot in Outlook is free and already there. Explore more in the AI marketing hub.
FAQ
What is the best AI email assistant? Superhuman for speed, Shortwave for an AI-native Gmail client, and Fyxer for drafting plus meeting notes. The best one depends on your setup.
What’s the best free AI email assistant? Gemini in Gmail and Copilot in Outlook are free with those accounts, and Shortwave and SaneBox offer trials or free tiers.
Can AI write my emails? Yes — tools like Shortwave and Fyxer draft replies that learn your tone, but you should review before sending, especially for anything sensitive.
Superhuman or Shortwave? Superhuman is the fastest all-round client; Shortwave is more AI-native and Gmail-focused. Both replace your inbox interface.
Are AI email assistants private? Reputable ones don’t train external models on your email and pass IT review, but check each tool’s policy before connecting a work account.
🧰 More: AI SEO & marketing · AI productivity tools · All AI Tools
