Compare software

Aerion vs Meron: catalog facts
Aerion	Meron
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the AGPL-3.0 licence.
Windows, macOS, Linux	Windows, macOS, Linux, Android, iOS
Built with Wails instead of Electron for lower resource use Direct IMAP and SMTP connection with mail stored locally	Kanban board view for organising mail Chat-style threads in a unified inbox
Young project with a smaller feature set than established clients Tracking protection is described as basic	Conversation-style layout differs from traditional mail clients Newer project with a smaller user base
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: AGPL-3.0-or-later
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.