Pythonでメール配信を自動化する方法

import smtplib

smtp = smtplib.SMTP()
smtp.connect(host, port) # connect to the server
smtp.set_debuglevel(1) # Show interaction information
smtp.login(username, password) # login to mailbox
smtp.sendmail(sender, receiver, msg.as_string()) # send mail
smtp.quit() # Disconnect

import smtplib
from email.mime.multipart import MIMEMultipart 
from email import encoders
from email.header import Header
from email.mime.text import MIMEText
from email.utils import parseaddr, formataddr
from email.mime.application import MIMEApplication

#Sender's email
asender="[email protected]"
#recipient mailboxes
areceiver="[email protected]"
#Copier email
acc = '[email protected]'
#email subject
asubject = 'This is a test email'  

#sender_address
from_addr = "[email protected]"
#email password (authorization code)
password = "123data"

#email settings
msg = MIMEMultipart()
msg['Subject'] = asubject  
msg['to'] = areceiver  
msg['Cc'] = acc 
msg['from'] = "Zhang Junhong"

# email body
body = "Hello, this is a test email"

# Add the body of the message:
msg.attach(MIMEText(body, 'plain', 'utf-8'))

#Add attachment
#Note that the file path here is a slash
xlsxpart = MIMEApplication(open('C:/Users/zhangjunhong/Desktop/This is an attachment.xlsx', 'rb').read())
xlsxpart.add_header('Content-Disposition', 'attachment', filename='This is an attachment.xlsx')
msg.attach(xlsxpart)    

# Set the email server address and port
smtp_server = "smtp.163.com"
server = smtplib.SMTP(smtp_server, 25)
server.set_debuglevel(1)

#login mailbox
server.login(from_addr, password)

#Send mail
server.sendmail(from_addr, areceiver.split(',')+acc.split(','), msg.as_string())

# Disconnect the server
server.quit()

import smtplib
from email.mime.multipart import MIMEMultipart 
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.application import MIMEApplication

host = "smtp.163.com"
port = 25
username = "[email protected]"
password = "123zjh"

smtp = smtplib.SMTP() # declare a link object
smtp.connect(host, port) # connect to the server
smtp.set_debuglevel(1) # show interaction information
smtp.login(username, password) # login to mailbox

sender = username

for i in zip(df["name"],df["recipient"],df["cc"]):
    
    receiver = i[1] # Recipient
    acc = i[2] # cc's


    msg = MIMEMultipart() # declare a mail object
    msg['from'] = username #sender
    msg['to'] = receiver#receiver
    msg['Cc'] = acc #Copier
    msg['Subject'] = i[0] + "Task Details" # subject

    # Write the body
    text = MIMEText(i[0] + "Hello, this is your task details for this month",'plain', 'utf-8') 
    msg.attach(text)

    # Add form attachment
    f = open('C:/Users/zhangjunhong/Desktop/Task Details/' + i[0] + '.xlsx', 'rb').read()
    filepart = MIMEApplication(f)
    filepart.add_header('Content-Disposition','attachment',filename=i[0] + 'task-detail.xlsx') # add a title for the attachment
    msg.attach(filepart)

    smtp.sendmail(sender, receiver.split(',') + acc.split(','), msg.as_string()) # send mail
smtp.quit() # disconnect