Emails can be sent from an email client which is software on a computer, or through web-based email clients that can be sent from anywhere with an internet connection. The outgoing mail server looks for the address of the inbound server. Protocols are rules that the computer follows.

Originally released by BBC Worldwide Learning, 2017. Streaming video file encoded with permission for digital streaming by Infobase on March 22, 2018.

How Email Works (2:04); .