Exo

No phone app

6.4No. 77 of 143
in Email clients

Recognised40% of the score64
Phone app26% of the score0
Documented20% of the score61

Free plan: Yes
Runs on: Mac

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Summary

Exo is ranked #77 of 143 in email clients on Samsung Mobile US Press. It runs on macOS. There is a free plan.

Exo plans and pricing

All plans

Free Free macOS · Gmail account · Anthropic API key exo.email · 11 Oct 2026

Compared on email clients

Free plan: Yesexo.email
App coverage: desktopexo.email
Offline access: Yesexo.email
Scheduled sending: Yesexo.email
Calendar tools: Yesexo.email

Facts

Product: Exo is an open-source, AI-native desktop email client that gathers context for emails and can draft replies in the user's style.exo.email · 11 Oct 2026
Triage: Claude analyzes incoming email and assigns high, medium, low, or skip priority.exo.email · 11 Oct 2026
Drafts: AI-generated drafts use thread context, sender background, and the user's writing style.exo.email · 11 Oct 2026
Agent: The Cmd+J agent can draft replies, look things up, forward with context, and work with custom agents.exo.email · 11 Oct 2026
Sender lookup: Automatic web search surfaces sender context such as role, company, and LinkedIn in a sidebar.exo.email · 11 Oct 2026
Email and calendar: Exo connects to Gmail and Google Calendar, with multi-account email switching and a calendar sidebar.exo.email · 11 Oct 2026
Organization: Features include priority and custom inbox tabs, natural-language snoozing, archive-ready detection, and hybrid local plus Gmail search.exo.email · 11 Oct 2026
Composition: The client supports rich-text composition, multiple signatures, scheduled send, undo send, inline images, and attachments.exo.email · 11 Oct 2026
Extensions: Exo supports runtime-installable extensions, custom agent providers, email-scoped sidebar panels, and MCP server tools.exo.email · 11 Oct 2026
Offline use: Exo supports offline use with queued actions and incremental background sync.exo.email · 11 Oct 2026
Local storage: Email data and OAuth tokens are stored locally on the user's computer, and Exo says it does not operate servers that store email data.exo.email · 11 Oct 2026
AI data flow: AI features process email locally or through an AI provider the user configures; email content may be sent to that provider using the user's own API key.exo.email · 11 Oct 2026
Security: Exo says OAuth tokens and local data use the operating system's standard security mechanisms, and its source code is publicly reviewable.exo.email · 11 Oct 2026
Support: The privacy policy directs questions to an issue on GitHub.exo.email · 11 Oct 2026
Who it's for: The site describes keyboard-driven navigation and says the client is built for people who live in their inbox.exo.email · 11 Oct 2026