Hi, My name is ***** ***** certified computer professional with over 10 years experience. I will be glad to assist you with this. .Yes, Windows live Mail is compatible with Windows 10.
When you upgrade to Windows 10 and select to log in with a Microsoft Account you will automatically have your linked email account created and available in the Mail app.
If you choose to use a local account to log into Windows 10, which Microsoft does allow, you will then need to setup your email account in the Mail app
Find the Mail app Go to the Start menu and choose Mail, or type Mail in the Windows search box, then choose Mail (Windows app) in the search results.
Set up your email accounts Go to Settings >Accounts
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