SMTP is a protocol used for sending email messages over the Internet. It is a client-server protocol, where a client program sends email messages to a server program, and the server program forwards the messages to their intended recipients.

There are some important concepts and terms you should know about working with SMTP:

Host: The host refers to the domain or IP address of the SMTP server that the email client is connecting to for sending email messages.

Port: The port is a numerical identifier that specifies the communication channel to be used for sending email messages. The default SMTP port is 25, but some servers may use different ports for SMTP communication, such as 587.

Email: An email refers to a complete message sent using the SMTP protocol, which includes the sender, recipient(s), subject, body, and any attachments.

CC: CC stands for "carbon copy" and refers to recipients who are added to an email message as secondary recipients. These recipients receive a copy of the email message, but the message is primarily addressed to the primary recipient(s).

BCC: BCC stands for "blind carbon copy" and refers to recipients who are added to an email message as hidden recipients. These recipients receive a copy of the email message, but their identities are hidden from other recipients.

The table below provides an explanation and type of parameters that must be filled by the user to establish an SMTP connection. It outlines the specific parameters required and their corresponding data types, which must be correctly entered to successfully establish an SMTP connection.

 

To transfer the email message created by the user to an SMTP server, it is necessary to define an output. This allows the user to create a new contact or modify an existing one, by specifying the required details such as the contact’s name, email address, and any other relevant information. It is important to ensure that all the required information is accurately entered when creating or modifying a contact in the SMTP server.