I'm sorry for the issues with getting your Email to work with "Windows 10 mail." In order to setup the default mail application in Windows 10, you need to create account (open the application, click on Accounts, then click Add account). In order to associate the account with your email address you will need your email settings. If you're an InMotion Hosting customer then you can find them here. There will be multiple types of accounts that you can select, but you will need to choose the "Other Account POP, IMAP" option. We don't currently have a walk-through for the default Mail application in Windows 10, but you can see an example of one here. I hope that helps to resolve your problem! If you continue to have issues, try calling our live technical support team. They can help you set it up over the phone, chat, or email.