Office
Can I delete Microsoft Outlook from my Mac?
You can delete Microsoft Outlook from your Mac, but you will lose local data unless you export it first. Server-based mail stays online, while items stored only on this device disappear if you remove the profile folder.
See how much space Microsoft Outlook really takes before you decide
Microsoft Outlook data usually takes 1 GB – 50 GB on a Mac. The free scan shows the exact size on your Mac before you change anything.
Free scan · No account · Nothing is deleted without your OK · Moves to the Trash first · macOS 14+
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Email me the link- Application
- Microsoft Outlook
- Typical data size
- 1 GB – 50 GB
- Category
- Office
- File Location
~/Library/Group Containers/UBF8T346G9.Office/Outlook
What you lose and what you keep when removing Microsoft Outlook
Specific to Microsoft Outlook
Mail, calendar events, and contacts from Exchange, Microsoft 365, Outlook.com, or IMAP accounts remain on the server and sync again if you reinstall. However, legacy POP accounts and folders under On My Computer exist solely in the local profile, so deleting the app does not remove these files, but removing the profile folder does. The app's data typically ranges from 1 GB – 50 GB. Shared Office components, including sign-in tokens and AutoUpdate helpers, should remain if you use other Office apps.
Where your Microsoft Outlook data lives
These folders hold your own Microsoft Outlook data. Deleting the app leaves them in place; removing them is what actually deletes it.
- Account and sync
- Exchange, Microsoft 365 and Outlook.com mail stays on the server; only POP accounts and items under On My Computer exist solely in the local profile.
- License
- Activation is tied to the Microsoft account and cached in the shared Office Group Containers, so it stays in place for any other Office app still installed.
- Your files
- In legacy Outlook, local-only mail, On My Computer folders and archives live in the profile folder inside the Office Group Container.
Preparation steps before deleting Microsoft Outlook
Deactivation is unnecessary because the license is tied to your Microsoft account and cached in shared Office containers. You must manually delete containers by hand, as there is no official uninstaller. Ensure you do not remove folders shared with Word or Excel if you still need them. Quitting the app before deleting its specific profile folder prevents data corruption.
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How to delete Microsoft Outlook completely
Quit Microsoft Outlook, move it to the Trash, then remove what it left in ~/Library/Group Containers/UBF8T346G9.Office/Outlook. The full step-by-step guide:
Try it without risk
- Download and scan for freeSee every Microsoft Outlook file and its size. No account needed.
- Clean free for 7 daysStart the 7-day free trial of the yearly plan inside the app.
- Keep it or cancelCancel in your App Store settings at least 24 hours before the trial ends and you won't be charged.
After the free trial, Pro costs $39.99 per year in your country's App Store; cancel any time.