Domain aliases allow you to point more than one domain to your website. For example, if you own yourdomain.com, yourcompany.net and yourcompany.org, you'd want all three domains to point to your website without having to copy the website twice. With Domain aliases, you can add yourcompany.net and yourcompany.org to provide your visitors with exactly the same website as yourcompany.com (your main domain). You will also be able to setup email accounts for your domain aliases such as you@yourcompany.net or you@yourcompany.org.