This article is intended for those who have a domain and website hosted with another company, but want to use 1&1 to create and manage the e-mail accounts for that domain.
If you would like to use 1&1 to manage your e-mail addresses for a domain and also use 1&1 to host the website for your domain, you can either Transfer the Domain to 1&1 or Point the Domain to 1&1 Name Servers instead.
Search for the Name Servers section and write down all the name servers listed.
A confirmation page is displayed. It may take up to 48 hours until the new name servers set are recognized by all servers/computers on the Internet.