sendmailWithoutTLS.py

# -*- coding: UTF-8 -*-

import smtplib
import pandas as pd
from email.header import Header
from email.mime.text import MIMEText

# python -m smtpd -n -c DebuggingServer localhost:1025

SERVER = ''
USER = ''
PASS = ''
SENDER = ''
SESSION = smtplib.SMTP(SERVER)
SESSION.login(USER, PASS)

def sendmail(content,owner):

    recipients = [owner]
    message = MIMEText(content.encode('utf-8'),'plain','utf-8') # plain or html
    message['Subject'] = Header("【您有一份礼包待领取】xxxxx",'utf-8')
    SESSION.sendmail(SENDER, recipients, message.as_string())


if __name__ == '__main__':
  
    emailinfo = pd.read_excel('./email.xls')

    noticeit = emailinfo[emailinfo['是否已安装xxx']=="否"]
    for mail in zip(noticeit['姓名'],noticeit['电子邮件']):
        try:
            name = mail[0]
            email = mail[1]
            print("正在向***{}***发送邮件:{}\t\t".format(name, email),end="")
            
            line1 = "{},你好:".format(name)            
            msg = "{}\n\t\t{}\n\t".format(line1, line2)
            
            sendmail(msg,email)
            print("--------发送成功-------- ✔️")
        except Exception as e:
            print("正在向***{}***发送邮件:{}\t\t".format(name, email),end="")
            print("--------发送失败-------- ️❎")
            pass

sendmailWithTLS.py

# +TLS

SESSION = smtplib.SMTP_SSL()
SESSION.connect(SMTPADDR, 465)
SESSION.login(SENDER, password)

MAILMSG = MIMEMultipart()
MAILMSG['Subject'] = SUBJECT
MAILMSG['From'] = SENDER
MAILMSG['To'] = toaddrs
MAILMSG.attach(MIMEText(msg, 'html', 'utf-8'))
SESSION.sendmail(SENDER, toaddrs, MAILMSG.as_string())

这个点十分的坑，由于之前并不知道发送邮件是否会有tls的设计，导致代码一直报错，未调试出来（在两个服务器上，一个可以，一个不可以），后来发现其实是因为smtp服务器一个有tls,一个没有。