What I'm not happy with is the way mail is going. Way back with Windows 8, they used the email client that doesn't empty the email server. ie the new mail will not download new email and empty the email on the server. As well as that, you can't compress the email to file in case you're changing your PC. So in the end, you're going to have 10000+ email including the spam. And no, I don't have to click spam twice, thrice, four times just to get rid of one spam but they do keep coming by whatever means.
In short, I'd quite happily use Windows 10 mail app and uninstall Windows Live Essentials, if it had the tick box to delete mail on the server after I've downloaded it to the PC.