So, even if you get your Message history and Contacts moved over, you won't be able to get any NEW E-mail unless you first DISABLE your antivirus/antispyware/firewall security apps. In addition, the Win10 Mail app is very finicky about using certain ISP webmail accounts such as Verizon, AT&T U-verse, Cox, etc.
There are a couple of shortcomings in Win10 Mail, and the main one is that if you try to import both contacts and your Mail messages at the same time to the Win10 Mail app, this won't work and you'll have to do them separately. However, it is not an easy process as I've done this on a couple of my computers upgraded from both Vista and Win7. The good news is that the W10 Mail app can import your old Email from OE & Windows Mail (Vista) and various versions of WLM. Win10 Native Mail app now replaces all versions of WLM. WLM has since been eliminated from being upgraded further (sort of like the way Outlook Express disappeared). I'm pretty sure Win7 didn't come with a native Mail app you had to use something called Windows Live Mail and that required a download from Microsoft via Microsoft Essentials.
