Python3-22456- 006邮件发送

        SMTP（Simple Mail Transfer Protocol）简单邮件传输协议，它是一组用于由源地址到目的地址传送邮件的规则，由它来控制信件的中转方式，在Python中，提供了smtp发送电子邮件，模块smtp对smtp协议进行了简单的封装，在这里通过QQ邮箱发送邮件。

一，首先，邮件的发送需要哪些内容? 思路如下：

1. 发送邮箱服务器，这里的QQ SMTP：smtp.qq.com，端口port：465

2. 发件人用户名与密码：mail_user，mail_pass

3. 发件人地址：xxx@qq.com

4. 接收人的地址列表：['xxx@qq.com']

5. 邮件正文文本内容，文本格式，文本编码，MIMEText()

6. 邮件发送者，message['from']

7. 邮件接收者，message['to']

二，使用Python发送邮件示例脚本

1. 邮件发送脚本示例01

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

mail_host = 'smtp.qq.com'
mail_user = 'xxx@qq.com'
mail_pass = 'password'

sender = 'xxx@qq.com'
receivers = ['xxx@qq.com']

message = MIMEText('Python邮件发送测试！--邮件正文内容！', 'plain', 'utf-8')
message['from'] = Header("菜鸟教程！--邮件发送人！", 'utf-8')
message['to'] = Header('邮件发送测试！ --邮件收件人！', 'utf-8')

subject = 'Python SMTP 邮件测试！ --邮件主题！'
message['subject'] = Header(subject, 'utf-8')

try:
    smtpObj = smtplib.SMTP_SSL(mail_host, 465) #重点！这里是ssl
    smtpObj.login(mail_user, mail_pass)
    smtpObj.sendmail(sender, receivers, message.as_string())
    print("Python邮件测试发送成功！")

except smtplib.SMTPException:
    print("Error: Python邮件发送失败！")

2. 邮件发送示例02

import smtplib
from email.utils import formatdate
from email.header import Header
from email.mime.base import MIMEBase
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

# smtplib用来发送邮件
# email用来构造邮件内容

username = "xx"  # 发件人用户名
password = "xxx" #发件人密码
smtp_addr = "smtp.qq.com" #发件人邮件服务器地址
from_addr = username + "@qq.com" #发件人邮箱
to_addr = ['xxx@163.com', 'yyy@qq.com'] #收件人地址列表

def message_template01(): #创建邮件内容的模板01
    mail_msg = """
    
Python邮件发送测试！
    
这是狗东链接
    """
    message = MIMEText(mail_msg, 'html', 'utf-8')
    message['Subject'] = Header('Python SMTP邮件测试！', 'utf-8')
    message['From'] = Header(username, 'utf-8')
    message['To'] = Header('; '.join(to_addr), 'utf-8')
    message['Date'] = formatdate(localtime=True)
    return message

def send_mail():
    message = message_template01()
    try:
        smtpObj = smtplib.SMTP_SSL(host=smtp_addr, port=465) #SSL,且必须带有参数host
        # smtpObj = smtplib.SMTP_SSL()
        # smtpObj.connect(host=smtp_addr, port=465)
        smtpObj.login(username, password)
        smtpObj.sendmail(from_addr, to_addr, message.as_string())
        smtpObj.quit()
        print("测试邮件发送成功！")
    except smtplib.SMTPException as e:
        print(repr(e))  # repr()函数是将对象转化为可供解释器读取的形式！
        print("Error: 无法发送邮件！")

if __name__ == '__main__':
    send_mail()