Email See Electronic Mail . Your email address is made up of several parts. By convention, addresses use lowercase letters with no spaces. The first part of the address, the username, identifies a unique user on a server . Large servers, such as those used at universities or large companies sometimes contain multiple parts, called subdomains.
More suffixes are under consideration.
Addresses outside of the U.S. sometimes use a two-letter suffix that identifies the country in which the server is located. The basis of network security. Encryption encodes network packets to prevent anyone except the intended recipient from accessing the data. FAQ Acronym for Frequently Asked Questions . FAQs are widely available on the Internet and usually take the form of large, instructional text files.