Bing found the following results
Set up email in the Mail app - Microsoft Support
How to get started with the Mail app on Windows 10
Set up email and calendar - Microsoft Support
Getting started with the new Outlook for Windows
Windows 10's Built-In Mail App: Everything You Need to Know
How to Set Up and Customize Email Accounts in Windows 10
Getting Started with Windows Mail in Windows 10 - groovyPost
How to use the Mail app in Windows 10 | TechRadar
Windows 10: The Complete Guide to Mail - Neowin
How to manage email and account settings on Windows 10