How do I access old MBOX emails in Hotmail?

You cannot directly access old MBOX emails in Hotmail (Outlook.com) because it does not support MBOX files. I also faced this issue when trying to move my archived emails, and at first, I expected Hotmail to open the file, but it simply doesn’t recognize the format.
To access those emails, you first need to import the MBOX file into Mozilla Thunderbird or another email client that supports MBOX. After that, add your Hotmail (Outlook.com) account using IMAP settings. Once connected, you can move the imported emails into your Hotmail folders, and they will sync automatically to your account in the cloud.
After syncing, your old MBOX emails will appear in Hotmail just like regular emails, and you can access them anytime from webmail or the Outlook app. This method works, but it can take time for large mailboxes. In such cases, users often prefer the MBOX file converter to migrate emails more easily while preserving attachments, folder structure, and formatting.

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