(ID# 8707) Use this System option in Options Configuration to specify the default domain to use with any store email addresses you've set up in other options where you don't explicitly include an email domain. For example, let's say you specified "joe.smith" as your store's email address without including the domain name in the address. If you specify "mydomain.com" as your default email domain in this option, then joe.smith@mydomain.com will be used as you store's email address. This option is used with your store email address, as well as with the "from" email addresses for statements, invoices, and purchase orders.