Microsoft Outlook

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Feature	Microsoft Outlook
STOA Rating	6.1
Description	Email and calendar app included with Microsoft 365. Combines inbox, calendar, contacts, and task list. Professional email hosting with your company domain, shared calendars, and Focused Inbox that separates important emails from noise. Included with Microsoft 365 Business ($6/user/month+). Free personal version at outlook.com.
Strengths	•Most widely used business email client — works with everything •Deep calendar integration with Teams, SharePoint, and M365 •Robust search, filtering, and rules for high email volumes •Free personal version at outlook.com
Weaknesses	•Requires Microsoft 365 subscription — cannot buy standalone for business •Desktop app can feel heavy and slow •Interface packed with many features — can feel cluttered •Some security features rolling out mid-2026
Key Features	•Professional email with your company domain included with M365 •Shared calendars and Scheduling Assistant for team meetings •Focused Inbox separates important emails from newsletters •Syncs across desktop, web, and mobile in real time •Task management via Microsoft To Do integration
Pricing	Free tier available Free Tier
Best For	All industries
AI Features	AI-Powered Copilot Chat drafts emails, summarizes threads, catches you up on missed conversations, manages calendar via natural language, suggests meeting times, prioritizes inbox, generates responses. Rolling out across M365 plans in 2026.
Categories	Communicate & Collaborate
STOA Verdict	The business email standard — reliable, works with everything, and your team already knows it. Calendar sharing and Scheduling Assistant alone save hours weekly. Tied to Microsoft 365 subscription.
	Visit Microsoft Outlook View Profile

Microsoft Outlook

6.1AI

Email and calendar app included with Microsoft 365. Combines inbox, calendar, contacts, and task list. Professional email hosting with your company domain, shared calendars, and Focused Inbox that separates important emails from noise. Included with Microsoft 365 Business ($6/user/month+). Free personal version at outlook.com.

Strengths

•Most widely used business email client — works with everything
•Deep calendar integration with Teams, SharePoint, and M365
•Robust search, filtering, and rules for high email volumes
•Free personal version at outlook.com

Weaknesses

•Requires Microsoft 365 subscription — cannot buy standalone for business
•Desktop app can feel heavy and slow
•Interface packed with many features — can feel cluttered

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Microsoft Outlook

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