MailRovers is a free, open-source desktop email client for Gmail on macOS. It uses a local-first design: mail and application data stay in SQLite on the computer, and synchronization runs while the app is open. Users can browse cached labels and conversations, search locally, read offline, compose, reply, keep drafts, send messages, and reconcile mailbox changes. Optional AI tools summarize conversations and stream reply suggestions for review. Users provide an OpenAI-compatible API base URL, model identifier, and API key. Only messages needed for an AI request are sent, and AI cannot send mail or change the mailbox automatically. Gmail refresh tokens and AI keys are encrypted before storage. Email HTML is displayed in a sandboxed frame that blocks scripts and navigation. MailRovers connects directly to Gmail without a hosted application server and is MIT licensed. The project is alpha software, must be built from source, and has no signed, notarized, automatically updating public release.
Who it is for
It suits macOS users who want a local Gmail client with offline workflows and optional, user-configured AI assistance. It is not positioned for a primary or business-critical inbox.
What is good
- Local SQLite storage
- Offline reading and mailbox work
- Optional AI summaries and reply suggestions
- Direct Gmail connection
- MIT-licensed open source
What to know first
- macOS only
- Gmail is the sole provider
- Synchronization runs only while open
- Alpha software requires building from source
Verdict
MailRovers offers extensive offline Gmail workflows with local storage and configurable AI features. Its alpha status, macOS focus, source-build requirement, and synchronization limit should shape expectations.
Compared on email clients
- App coverage
- desktop
- Offline access
- Yes
