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eM Client vs Meron: catalog facts
eM Client	Meron
Freemium Free licence for personal, non-commercial use with up to two accounts; Personal from…	Free Free and open source under the AGPL-3.0 licence.
Windows, macOS, Android, iOS	Windows, macOS, Linux, Android, iOS
Handles Gmail, Microsoft 365, Outlook, Exchange and plain IMAP without plugins Email, calendar, tasks, contacts, notes and chat in one polished window	Kanban board view for organising mail Chat-style threads in a unified inbox
No Linux version The free licence is capped at two accounts and forbids any commercial use	Conversation-style layout differs from traditional mail clients Newer project with a smaller user base
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0-or-later
Account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 1, 2026

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