HS SMTP C Source Library

HS SMTP is a software library in C (supplied with full source code) which implements the client side of Simple Mail Transfer Protocol (SMTP) over TCP socket layer according to RFC 821. Support for transfer of basic message header and text is provided. To send a text email message to any address on the internet, the user application calls a single function HS SMTP SendMail, specifying mail server name or IP address, sender address, recipient address, message text buffer and length, subject, cc and an event callback function to use for reporting of operation result and server errors.

What is new in this release:

Version 2.0.11 has added a configurable initial timeout to wait for SMTP server to reply.