首先在163郵箱開啟授權碼

記住這個授權密碼,我們在python代碼裏面用的就是這個密碼

不然會出現這個報錯

# -*- coding:utf-8 -*-

import smtplib
from email.header import Header
from email.mime.text import MIMEText

# 第三方 SMTP 服務
mail_host = "smtp.163.com"      # SMTP服務器
mail_user = "[email protected]"                  # 用戶名
mail_pass = "08556220"               # 授權密碼，非登錄密碼

sender = '[email protected]' #發郵件人
receivers = '[email protected],[email protected]' #收郵件人

content = 'test mail的內容' #郵件內容
title = 'test mail'  # 郵件主題

def sendEmail():

    message = MIMEText(content, 'plain', 'utf-8')  # 內容, 格式, 編碼
    message['From'] = "{}".format(sender)
    message['To'] = receivers
    message['Subject'] = title

    try:
        smtpObj = smtplib.SMTP_SSL(mail_host, 465)  # 啟用SSL發信, 端口一般是465
        smtpObj.login(mail_user, mail_pass)  # 登錄驗證
        smtpObj.sendmail(sender, receivers, message.as_string())  # 發送
        print("mail has been send successfully.")
    except smtplib.SMTPException as e:
        print(e)

# def send_email2(SMTP_host, from_account, from_passwd, to_account, subject, content):
#     email_client = smtplib.SMTP(SMTP_host)
#     email_client.login(from_account, from_passwd)
#     # create msg
#     msg = MIMEText(content, 'plain', 'utf-8')
#     msg['Subject'] = Header(subject, 'utf-8')  # subject
#     msg['From'] = from_account
#     msg['To'] = to_account
#     email_client.sendmail(from_account, to_account, msg.as_string())

#     email_client.quit()

if __name__ == '__main__':
    sendEmail()
    # receiver = '***'
    # send_email2(mail_host, mail_user, mail_pass, receiver, title, content)

文章借鑒

http://blog.csdn.net/sunhuaqiang1/article/details/70833199

python3 發送電子郵件