Domain Name Just For Email
From here you will choose a free email domain name.
Domain name just for email. If the domain name is unavailable then it will show you some alternative options to choose from or you can just enter a new domain name. After that click on the next button to continue. Whenever an email comes in to email protected forward that email to email protected in this case the address email protected is an alias for email protected. Email hosting is simply the service of storing your emails and attachments on the internet.
Again if you cannot find the part of their site to modify search their documentation perhaps with a query like custom domain domain or mx record to find out what.