the domain name doesn't matter. You can register it yourself and they can help you register it, as long as you have the highest administrative authority for domain name management. For example, if the domain name is registered in China Wanwang, you can have an account to log in to Wanwang, and then you can log in to Wanwang's backstage management panel to manage domain name resolution and so on. The rest is nothing, and they can't make much money from you. At most, a domain name will charge you 1 -15 yuan. It doesn't matter, just give your top administrator account password.

you should pay attention to the space. Don't just have an FTP account password, which is inconvenient and unsafe. You also need a control panel account password with virtual space.

The email address can be ignored. Generally, it is a gift, and you don't need much to give it to you. Generally, the salesman will regard this as a big discount for the company to customers as a selling point. If you need it, I can make corporate email for you free of charge. There are many big companies on the Internet that provide free corporate email binding, such as Hotmail, Gmail, QQ and so on.