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This argument needs to be mentioned when the host argument is given. port: This parameter takes the port number of the machine from where the SMTP server is listening to the connections. We can either give the IP address or the local host. host: This is the hostname of the server that is running the SMTP server.

smtp_obj = smtplib.SMTP(host, port, local_hostname)ġ. The syntax of this function is given below. import smtplibĪnd to create the SMTP object we can use the SMTP() function inside the module. We can import this module using the below code. This object can then be used to send an email on any internet session. This module defines the SMTP client session object. In Python, we use the smtplib module to send emails.

But at the receiver’s end, it used the POP (Post Office Protocol) and IMAP (Internet Message Access Protocol). This is a push protocol, so we can use it to send emails. This is a connection-oriented protocol and uses TCP as a transport layer. SMTP is the standard protocol for transmitting electronic mail (or in short e-mail). One of such protocols is SMTP (Simple Mail Transfer Protocol). When dealing with networking, we use one or more protocols based on the requirements of the task we do. Protocols are the set of rules that define a task. So, let us begin with the introduction to SMTP. We will discuss the SMTP protocol, sending mail using Python, and also sending an HTML email using Python. What to send an email by using the Python code, rather than going to the browser or app to do so? You would have sent and received an email.