Python3 SMTP send mail

Weaving magic demon 2021-01-20 20:28:48
python3 python smtp send mail


SMTP

SMTP(Simple Mail Transfer Protocol) Simple Mail Transfer Protocol , It's a set of rules for sending mail from source to destination , It controls the way letters are transferred .

python Of smtplib Provides a very convenient way to send email . It's right smtp The protocol is simply encapsulated .

One . preparation

Before we code , Get ready first

1. confirm pip edition

install smtplib and email When I was in the library , Check your own pip Is it the highest version of , If not , It is recommended to upgrade to the highest version

2. Email script name

python The name of the email script should never be named email.py

If the command is email.py , In the installation email When I was in the library , Because of the conflict , It's been a mistake

ModuleNotFoundError: No module named 'cStringIO'
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

3. Coding format

The coding format in the lower right corner must be UTF-8, Otherwise, this error will be reported all the time

D:\PycharmProjects\untitled\python\Scripts\python.exe D:/PycharmProjects/python/youjian.py File "D:/PycharmProjects/python/youjian.py", line 2 SyntaxError: Non-UTF-8 code starting with '\xd3' in file D:/PycharmProjects/python/youjian.py on line 2, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details Process finished with exit code 1

resolvent

Creating .py In the bottom right corner of the file, find GBK, take GBK Switch to UTF-8 that will do

4. Turn on SMTP agreement

Log in to your 163 Mailbox and qq mailbox , Turn on SMTP agreement , Here's the picture

163 mailbox
qq mailbox

We need to remember the authorization code for sending email , As shown in the figure below

Authorization code

Two . The code analysis

1. introduce smtplib and email library

import smtplib
from email.header import Header # It's used to set the header and the subject of the message
from email.mime.text import MIMEText # Send a message with only simple text in its body , introduce MIMEText that will do 

2. Define the sender and recipient

sender = '[email protected]'
receiver = '[email protected]'

3. Define the SMTP The server

# Used to send mail SMTP The server
smtpServer = 'smtp.163.com'

4. Define the user name and authorization code for sending e-mail

# Send email user name and authorization code ( It's not the password to log in to the mailbox )
username = 'XXXXXXXXXXXXXXX'
password = 'XXXXXXXXXXXXXXX'

5. Define topics and content

mail_title = ' Test sending email '
mail_body = ' Mail delivery 123'

6. Create an instance

message = MIMEText(mail_body, 'plain', 'utf-8') # Message body
message['From'] = sender # The sender shown on the message
message['To'] = receiver # The recipients shown on the message
message['Subject'] = Header(mail_title, 'utf-8') # Email subject 

7. Create connection , Send E-mail

try:
smtp = smtplib.SMTP() # Create a connection
smtp.connect(smtpServer) # Connect to the sending server
smtp.login(username, password) # logon server
smtp.sendmail(sender, receiver, message.as_string()) # Fill in the message and send
print(" Mail sent successfully !!!")
smtp.quit()
except smtplib.SMTPException:
print(" Failed to send mail !!!")

8. summary

Complete code :

import smtplib
from email.header import Header # It's used to set the header and the subject of the message
from email.mime.text import MIMEText # Send a message with only simple text in its body , introduce MIMEText that will do
# From and to
sender = '[email protected]'
receiver = '[email protected]'
# Used to send mail SMTP The server
smtpServer = 'smtp.163.com'
# Send email user name and authorization code ( It's not the password to log in to the mailbox )
username = 'XXXXXXXXXXXXXXX'
password = 'XXXXXXXXXXXXXXX'
mail_title = ' Test sending email '
mail_body = ' Mail delivery 123'
# Create an instance
message = MIMEText(mail_body, 'plain', 'utf-8') # Message body
message['From'] = sender # The sender shown on the message
message['To'] = receiver # The recipients shown on the message
message['Subject'] = Header(mail_title, 'utf-8') # Email subject
try:
smtp = smtplib.SMTP() # Create a connection
smtp.connect(smtpServer) # Connect to the sending server
smtp.login(username, password) # logon server
smtp.sendmail(sender, receiver, message.as_string()) # Fill in the message and send
print(" Mail sent successfully !!!")
smtp.quit()
except smtplib.SMTPException:
print(" Failed to send mail !!!")

Execution effect :

Original statement , This article is authorized by the author + Community publication , Unauthorized , Shall not be reproduced .

If there is any infringement , Please contact the [email protected] Delete .

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https://pythonmana.com/2021/01/20210120183403845h.html

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