A domain in networks, such as the Internet, is a group of connected computers which may contain subdomains, typically indicated by a three-letter suffix like .com, .edu, .gov, and more.
An e-mail address is a unique identifier for an e-mail account, typically used to send and receive electronic messages over the internet. A standard e-mail address format is username@domain.com, where 'username' is the recipient’s email account and 'domain.com' represents the mail server.
