You may modify the "From:" and "Reply To:" setting for your list to whatever you like at no additional charge.
However, if that is not enough, we can further customize your services by allowing you to use your own domain name (Virtual Mail Server). This allows you to brand your mailings using your own domain name instead of ours.
This will require you to create a CNAME record at your existing domain registry (ex. list.YOURDOMAIN.com) to point at our mail servers which we will assign you to.
This is an optional feature that requires a one-time setup fee of $35.