Simple Mail Transfer Protocol (SMTP)
SMTP is used for sending mail between client and server and between servers.
[>] RFC 821: Simple Mail Transfer Protocol
[>] Writing an SMTP client
TCP/IP communications are relatively easy using Visual Basic and a custom VBX such as DevSoft's IPPort. Details of an SMTP (Simple Mail Transfer Protocol) client are described to help the reader understand how such a program can be developed using IPPort. The result is a VB form that can be added to your own project in order to send e-mail.
[>] Writing your own SMTP Gateway