SMTP and POP3 Email

Uniface provides support for sending and receiving email using the SMTP and POP protocols over TCP/IP or TLS.

SMTP (Simple Mail Transfer Protocol) is used in sending and receiving email. It is limited in its ability to queue received messages, so the POP3 (Post Office Protocol—Version 3) protocol is usually used to handle received mail.

POP allows the user to save messages in a server mailbox and download them periodically to their client. Users typically use a program that uses SMTP for sending email, and POP3 for receiving messages that have been received on their behalf at their local server.

To send and receive email from a Uniface application, you can make use of the UPOPMAIL component API. For more information, see UPOPMAIL.

The UPOPMAIL component uses the Uniface network connectors to communicate with the POP3 and SMTP servers over TCP and TLS. For more information, see Communicating with Mail Servers, TLS Connector, and TCP Connector

The UPOPMAIL delegates connection and authentication to email servers. For more information, see Security Drivers for Email Authentication