MarshallSoft SMTP/POP3/IMAP Visual FoxPro email component library (SEE4FP) to send, receive and parse mail including HTML and MIME Base64 and quoted-printable encoded attachments. Supports SMTP and POP3 authentication. Supports ISO-8859 and UTF-8 messages. Supports all versions of Visual FoxPro. Comes with many Visual FoxPro examples. Can also be used with any language that can call the Windows API. Royalty free.
HS SMTP LITE 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. Supports transfer of text and file attachments. HS SMTP Library incorporates the necessary state machine, transparency procedures, and server response processing required to comply to a simple and robust SMTP client implementation.