How to check Outlook mailbox storage usage

Although Outlook.com is free to use, it doesn’t come with infinite storage. The free tier only offers 15GB of space, which, even though it should be enough for most home users, depending on how you use the service, the day may come when the space will run out, even more now that Microsoft plans to change what files count toward the quota in early 2023.

If you want to stay informed on the space usage in your account, the Outlook configurations include a page that shows how much storage you are using and options to free up space.

This tutorial will teach you the steps to check the storage usage of your Outlook.com mailbox account on Windows 11, 10, macOS, or Linux.

Check Outook mailbox size limit online

To determine the storage usage of your Outlook mailbox, use these steps:

  1. Open Outlook.com.

  2. Sign in with your credentials (as needed).

  3. Click the Settings (gear) button on the upper-right corner.

  4. Select the “View all Outlook settings” option at the bottom.

    Outlook web settings

  5. Click on General.

  6. Click on Storage.

  7. Confirm the storage usage for your inbox, sent, and deleted items in Outlook.com.

    Outlook storage usage

  8. (Optional) Use the Empty option to free up space by removing deleted, sent, archive, and inbox items.

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Once you complete the steps, the configurations page will display the storage usage and how much space you have left in your account.

If you’re running low on space, Microsoft offers an additional 50GB when you sign up for a Microsoft 365 subscription.

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