Email agent (infrastructure)

An e-mail agent is a program that is part of the e-mail infrastructure, from composition by sender, to transfer across the network, to viewing by recipient. The best-known are message user agents (MUAs, aka, e-mail clients) and message transfer agents (MTAs, programs that transfer e-mail between clients), but finer divisions exist. E-mail servers are built from one or more software packages, each of which carries out the functions of one or more MxA.

Email agent (infrastructure)

An e-mail agent is a program that is part of the e-mail infrastructure, from composition by sender, to transfer across the network, to viewing by recipient. The best-known are message user agents (MUAs, aka, e-mail clients) and message transfer agents (MTAs, programs that transfer e-mail between clients), but finer divisions exist. E-mail servers are built from one or more software packages, each of which carries out the functions of one or more MxA.