You can quickly import Windows Live Mail to Office 365 without using Outlook. I recommend the Third-party software that name is eSoftTools Windows Live Mail Converter. This software securely converts Windows Live Mail single and multiple files to others formats. The tool enables the user to instantly import Windows Live Mail to Office 365, PST, MSG, EMLX, MBOX, MHTML and, HTML, etc. It can operate with all versions of MS Outlook and Windows versions up to 10.

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