Flatsonar

Aerion

by 3DF

Lightweight open-source email client for Linux

Broad permissions Verified creator Apache-2.0 v0.3.5
Install Source code
Screenshot 1 of Aerion

About

Aerion is a modern, lightweight email client inspired by Geary, focused on resource efficiency and a clean user experience.

Features:

  • Multiple email accounts with unified inbox
  • Support for Gmail, Outlook, and generic IMAP/SMTP
  • Conversation threading
  • Rich text WYSIWYG composer with TipTap editor
  • Contact sync (CardDAV, Google, Microsoft) for auto-completion
  • Dark mode and multiple color themes
  • Keyboard-friendly navigation with vim-style shortcuts
  • Detachable composer window
  • Basic tracking element removal from emails
  • PGP and S/MIME support
  • Contacts extension (ALPHA)
  • Calendar extension (ALPHA)
  • Custom OAuth support for generic IMAP, SMTP, CardDAV, and CalDAV

Permissions

1 permission weaken the sandbox. Flatsonar asks before installing.

  • session management (logout, suspend)
    --system-talk-name=org.freedesktop.login1
  • inter-process communication (needed for X11)
    --share=ipc
  • network
    --share=network
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • Wayland display
    --socket=wayland
  • GPU acceleration
    --device=dri

Who publishes this

The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.

  • verified on Flathub: the developer proved they control this app id
    publisher:flathub

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.