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eM Client vs NetEase Mail Master: catalog facts
eM Client	NetEase Mail Master
Freemium Free licence for personal, non-commercial use with up to two accounts; Personal from…	Free Free to download; NetEase also sells VIP mailbox plans separately.
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	Works with Chinese providers such as 163 and QQ as well as Outlook Available on desktop and mobile, including Linux
No Linux version The free licence is capped at two accounts and forbids any commercial use	Interface and documentation are mainly in Chinese Linux package targets Ubuntu 22.04
Downloadable app	Downloadable app
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 October 1, 2026

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