How to use the smtplib module to send emails in Python 2.x

How to use the smtplib module to send emails in Python 2.x

Overview:
Sending emails is one of the common tasks in modern communication. Python provides the smtplib module to send emails, which can easily communicate with SMTP (Simple Mail Transfer Protocol) servers. This article will introduce how to use the smtplib module to send emails in Python 2.x and provide specific code examples.

Step 1: Import the smtplib module
First, we need to import Python's built-in smtplib module in order to use it in the code to send emails. The code is as follows:

import smtplib

Step 2: Connect to SMTP server
Before using smtplib to send emails, we need to establish a connection with the SMTP server. The SMTP server address and port number depend on the email service provider you use. In the following example, we take Gmail as an example and use Gmail's SMTP server. The code is as follows:

smtp_server = "smtp.gmail.com"
port = 587
server = smtplib.SMTP(smtp_server, port)

Step 3: Authentication
The SMTP server requires authentication to ensure the validity of email sending. We can authenticate using the login() method of the SMTP object. The code is as follows:

email = "your-email@gmail.com"
password = "your-password"
server.login(email, password)

Please replace "your-email@gmail.com" and "your-password" with your own Gmail email address and password.

Step 4: Build the email
Before sending the email, we need to build the content of the email. Emails usually consist of a header and a body. The email header contains the sender, recipient, subject and other information, and the email body is the actual email content. In the example below, we send a simple plain text email. The code is as follows:

from_addr = "your-email@gmail.com"
to_addr = "recipient@example.com"
subject = "Hello, this is a test email."
body = "This email was sent using smtplib module in Python."

message = "From: %s
" % from_addr
message += "To: %s
" % to_addr
message += "Subject: %s

" % subject
message += body

Please replace "your-email@gmail.com" with your own Gmail email address, and replace "recipient@example.com" with the recipient of the email you want to send. email address.

Step 5: Send the email
Once the complete email is constructed, we can use the sendmail() method of the SMTP object to send the email. The code is as follows:

server.sendmail(from_addr, to_addr, message)

Step 6: Exit the connection
After completing the email sending, we need to exit the connection with the SMTP server. The code is as follows:

server.quit()

The complete sample code is as follows:

import smtplib

smtp_server = "smtp.gmail.com"
port = 587
server = smtplib.SMTP(smtp_server, port)

email = "your-email@gmail.com"
password = "your-password"
server.login(email, password)

from_addr = "your-email@gmail.com"
to_addr = "recipient@example.com"
subject = "Hello, this is a test email."
body = "This email was sent using smtplib module in Python."

message = "From: %s
" % from_addr
message += "To: %s
" % to_addr
message += "Subject: %s

" % subject
message += body

server.sendmail(from_addr, to_addr, message)
server.quit()

Notes:

1. Please make sure that your email server allows the use of SMTP for authentication and sending emails .
2. If you are using Gmail, you need to enable "Allow access by low-security applications" in Gmail settings.
3. In actual use, you may need to construct more complex email content according to your own needs.

Conclusion:
This article introduced you how to send emails using the smtplib module in Python 2.x. You can easily send emails using Python by importing the smtplib module, connecting to an SMTP server, authenticating, building the email, and sending the email. I hope this article is helpful to you, and I also look forward to you using your creativity in practical applications.

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