How to Force WWW in Your ASP.NET Website Using Global.asax
Policy Update: Email Forwarding Restrictions to Free Email Providers
Policy on Email Sending Limits for Shared Email Servers
all subdomains (like anything.yourdomain.com) to point to your main site (yourdomain.com), you can achieve this with a wildcard subdomain setup.
Install WordPress in a subdirectory while serving it from the root domain. Keep your root folder clean and your site running smoothly.