= Simple Mail Transfer Protocol = '''Simple Mail Transfer Protocol''' ('''SMTP''') is a communication protocol for sending and forwarding emails. <> ---- == History == Mainframes and multi-user computers had utilites for inter-user communication (such as `wall(1)`). ARPANET enabled the exchange of messages between hosts, especially as through [[Protocols/FTP|FTP]]. The [[BSD]] project developed `sendmail(1)`, the first [[Email/MTA|message transfer agent]] implementing an SMTP standard. ---- CategoryRicottone