[Python] Send email

Thing you want to do

--I want to send an email with python

Background

I wanted to be notified by email of the results of various processes, so I incorporated email sending with Outlook. Since it is a daily operation, if I set it in the task scheduler, it means that an email was sent, but it is not actually sent. It will be sent if you execute it directly, not from the task scheduler. After some research, I found it a bit difficult to use office products such as Outlook in a server environment. I found that I could use the standard library as an alternative, so make a note of it.

point

--Use the standard libraries `smtplib``` and ```email``` --In addition, server host name , port number , authentication ID , authentication password is required --However, it may be OK without ``` authentication ID` and authentication password` `` (depending on the environment) --If there are multiple destinations, they will be sent one by one, so pass the `` `destination address in a list and turn it with the `` `for``` statement.

Code sample

`sample.py`


from email import message
import smtplib

smtp_host = 'hostname'
smtp_port =Host number
smtp_account_id = 'Authentication ID'
smtp_account_pass = 'Authentication password'
send_from = '[email protected]'
l_send_to = [
    '[email protected]',
    '[email protected]'
]

subject = 'Work report'
content = f'Work is finished'

for s in l_send_to:
    msg = message.EmailMessage()
    msg.set_content(content)
    msg['Subject'] = subject
    msg['From'] = send_from
    msg['To'] = s

    server = smtplib.SMTP(smtp_host, smtp_port, timeout=10)
    server.login(smtp_account_id, smtp_account_pass) #Sometimes it ’s okay without it
    server.send_message(msg)
    server.quit()