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eM Client vs Becky! Internet Mail: catalog facts
eM Client	Becky! Internet Mail
Freemium Free licence for personal, non-commercial use with up to two accounts; Personal from…	Paid Shareware that requires a paid licence after evaluation.
Windows, macOS, Android, iOS	Windows
Handles Gmail, Microsoft 365, Outlook, Exchange and plain IMAP without plugins Email, calendar, tasks, contacts, notes and chat in one polished window	Small, fast native Windows program Multiple mailboxes with separate profiles
No Linux version The free licence is capped at two accounts and forbids any commercial use	Windows only HTML mail relies on an Internet Explorer component
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 2, 2026

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