Aerion is a standalone lightweight e-mail client inspired by Geary focused on achieving the following goals:
- Resource Efficiency – Minimal CPU, RAM, and battery consumption.
- Modern UX – Clean, intuitive interface with dark mode support.
- Keyboard & Mouse Friendly – Full keyboard navigation with vim-style shortcuts.
- Independence – No dependency on Gnome Online Accounts or other system services.
- Search That Works – Basic search that actually finds your emails.
This is free and open source software
Key Features
- Multiple Accounts
- Generic IMAP/SMTP.
- GMail.
- Microsoft 365 / Outlook.
- Proton Mail (via Proton Bridge).
- iCloud Mail.
- Unified Inbox (Color Code Accounts).
- Conversation Threads.
- Basic Removal of Tracking Elements in Mail Content.
- WYSIWYG Detachable Composer (TipTap Editor).
- WYSIWYG Signatures (TipTap Editor).
- CardDav/Google/Microsoft Contact Sync for auto-complete.
- Basic Search.
- Notification that brings focus to the e-mail when clicked (Linux Only).
- Auto-Sync when system wakes from suspend (Linux Only).
- Multiple color themes.
- PGP & S/MIME experimental support.
- Keyboard Shortcuts.
- Cross-platform support – runs under Linux, macOS, and Windows.
Website: github.com/hkdb/aerion
Support:
Developer: hkdb
License: Apache License 2.0
Aerion is written in Go. Learn Go with our recommended free books and free tutorials.
Related Software
| Graphical Email Clients | |
|---|---|
| Thunderbird | Popular free, cross-platform e-mail, RSS and newsgroup client |
| Kmail | Email component of Kontact |
| Sylpheed | Simple, lightweight client |
| Mailspring | New version of Nylas Mail |
| Claws Mail | Lightweight yet powerful and full-featured client |
| Evolution | Provides integrated mail, addressbook and calendaring functionality |
| Geary | Mail client for GNOME written in Vala |
| Balsa | Email client for GNOME |
| Astroid | Lightweight and fast Mail User Agent |
| Also known as Pantheon Mail | |
| Dodo | Based on the command line email swiss-army-knife notmuch |
| Betterbird | Soft-fork of Thunderbird |
Read our verdict in the software roundup.
| Lightweight Email Clients | |
|---|---|
| Sylpheed | Client also based on the GTK+ GUI toolkit |
| Claws Mail | Powerful, user-friendly, fast and full-featured mail client based on GTK+ |
| Geary | Lightweight mail client for GNOME that is written in Vala |
| Astroid | Lightweight and fast Mail User Agent |
| Trojitá | Qt-based IMAP email client |
Read our verdict in the software roundup.
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