Microsoft Outlook

What is Microsoft Outlook?

Microsoft Outlook is an email, calendar, contacts, and task management application from Microsoft. On Mac, people typically use it with Microsoft 365, Exchange, Outlook.com, or other email accounts for daily communication and scheduling. Users may encounter it as a desktop app, background sync components, account data, cached mailbox content, and preference files related to mail, calendars, contacts, and notifications.

Safety overview

Status: Safe

This is a legitimate Microsoft application. Removing it or its related data may affect access to email, calendars, contacts, local caches, account settings, and offline mailbox content.

Recommendation: Keep if you use Outlook or any connected Microsoft account features on this Mac. If you no longer use it, review related app data carefully before removal because mail caches, preferences, and account data may still be stored locally.

Common paths

• /Applications/Microsoft Outlook.app

Cache paths

• ~/Library/Caches/com.microsoft.Outlook

Support paths

• ~/Library/Application Support/Microsoft/Outlook
• ~/Library/Group Containers/UBF8T346G9.Office/Outlook

Preference paths

• ~/Library/Preferences/com.microsoft.Outlook.plist

Container paths

• ~/Library/Containers/com.microsoft.Outlook

Related apps

• Microsoft Word
• Microsoft Excel
• Microsoft PowerPoint
• Microsoft OneNote
• Microsoft Teams
• Microsoft AutoUpdate

Related can I delete pages

• Microsoft Outlook.app — the main Outlook email and calendar application; removing it stops access to the app on this Mac.
• ~/Library/Containers/com.microsoft.Outlook — Outlook sandbox container that may store app data and settings; removing it can reset the app or remove local data.
• ~/Library/Group Containers/UBF8T346G9.Office/Outlook — shared Microsoft Office Outlook data, often including caches or profile-related content; removing it may affect offline data and sign-in state.
• ~/Library/Caches/com.microsoft.Outlook — cache files used to improve Outlook performance; removing them is usually lower risk than deleting support data, but Outlook may need to rebuild them.

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