Noun
(computer science) a system of world-wide electronic communication in which a computer user can compose a message at one terminal that can be regenerated at the recipient's terminal when the recipient logs in
Source: WordNetWritten communication is a tremendous help for me, and so when electronic mail was invented in '71, I got very excited about it, thinking well, gee, the deaf community could really use this, or the hard-of-hearing community as well. Vint Cerf
you cannot send packages by electronic mail Source: Internet