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eM Client vs Microsoft Outlook: catalog facts
eM Client	Microsoft Outlook
Freemium Free licence for personal, non-commercial use with up to two accounts; Personal from…	Freemium Free app and account available; Microsoft 365 plans add paid features and Office apps.
Windows, macOS, Android, iOS	Windows, macOS, Android, iOS, Web
Handles Gmail, Microsoft 365, Outlook, Exchange and plain IMAP without plugins Email, calendar, tasks, contacts, notes and chat in one polished window	Email, calendar and contacts for multiple accounts in one app Available on desktop, mobile and web
No Linux version The free licence is capped at two accounts and forbids any commercial use	Closed source and tied to Microsoft services Some features, including Copilot, require a paid plan
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is 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 September 23, 2026

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