Pick two. The table shows their rating, their Openness score and the facts behind it, each from the vendor's own pages.
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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.
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.
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.
