Word Study
electronic mail
CIDE DICTIONARY
electronic mail, n.
a message transmitted from one computer to another, accessible by means of a mail reading program on the receiving computer. The message may have one or many intended recipients, and may be directed by the sending program to one or to multiple receiving computers. The message is typically in the form of a computer file, and may be a simple ASCII text, or any other type of binary coded information [PJC]
For further exploring for "electronic mail" in Webster Dictionary Online