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Microsoft Outlook vs Yahoo Mail: catalog facts
Microsoft Outlook	Yahoo Mail
Freemium Free app and account available; Microsoft 365 plans add paid features and Office apps.	Free Free email service from Yahoo.
Windows, macOS, Android, iOS, Web	Android, iOS, Web
Email, calendar and contacts for multiple accounts in one app Available on desktop, mobile and web	Free email account Available on the web and on phones
Closed source and tied to Microsoft services Some features, including Copilot, require a paid plan	Closed service run by a large advertising company Hosted only, no self-hosting option
Downloadable app, Web application	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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