Python使用SMTP发送邮件

文章目录

Python使用SMTP发送邮件
一，发送简单邮件
二，发送HTML格式邮件
三，发送带有附件的邮件

SMTP（Simple Mail Transfer Protocol）即
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到规则，由它来控制信件到中转方式。

Python的smtplib提供了一种很方便的途径发送电子邮件。它对smtp协议进行类简单的封装。

语法：

smtpObj ＝ smtplib.SMTP( [host [ , port, hostname] ])

host：SMTP服务器主机，可以指定主机的IP地址或者域名，可选参数

port：一般情况下SMTP端口号为25

hostname：如果SMTP在本机上，只需要指定服务器地址为localhost即可。

Python的SMTP对象使用sendmail方法发送邮件。

语法：

SMTP.sendmail(from_addr, to_addr, msg)
1
from_addr：邮件发送者地址

to_addrs：字符串列表，邮件发送地址

msg：发送消息

一，发送简单邮件

# coding=utf-8
import smtplib

mail_host = 'smtp.163.com'
mail_port = 25
mail_username = "XXXXXXXX@163.com"
mail_password = "NHXXXXXXXXXXXXXXF"
receivers = ['XXXXXRRRR@163.com','XXXXXXXX@163.com','XXXXXXXX@qq.com']
message = "this is an email"

smtpObj = smtplib.SMTP()
smtpObj.connect(mail_host,mail_port)
smtpObj.login(mail_username, mail_password)
smtpObj.sendmail(mail_username, receivers, message)
print ("send success")
smtpObj.close();

注意：

收件人list最好加上寄件人，否则有可能出现发送不成功的问题
邮箱密码不是浏览器登录的密码，而是开启SMTP的验证口令

二，发送HTML格式邮件

# coding=utf-8
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header

mail_host = 'smtp.163.com'
mail_port = 25
mail_username = "XXXXXXXX@163.com"
mail_password = "NHXXXXXXXXXXXXXXF"
receivers = ['XXXXXRRRR@163.com','XXXXXXXX@163.com','XXXXXXXX@qq.com']

body = "<html><h1>Hello, Small Mouse</h1><br><h2>i am xxxxx, i am happy that you would help me to test python-send-email</h2>" \
          "<br><a href='http://www.baidu.com'>click me</a></html>"

message = MIMEMultipart()
message['From'] = 'XXXXXXXX@163.com'
message['To'] = 'hyjutrhdf'
subject = "xxxx's python email"
message['Subject'] = Header(subject, 'utf-8')
message.attach(MIMEText(body, 'html', 'utf-8'))


smtpObj = smtplib.SMTP()
smtpObj.connect(mail_host,mail_port)
smtpObj.login(mail_username, mail_password)
smtpObj.sendmail(mail_username, receivers, message.as_string())
print ("send success")
smtpObj.close();

三，发送带有附件的邮件

# coding=utf-8
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header

mail_host = 'smtp.163.com'
mail_port = 25
mail_username = "XXXXXXXX@163.com"
mail_password = "NHXXXXXXXXXXXXXXF"
receivers = ['XXXXXRRRR@163.com','XXXXXXXX@163.com','XXXXXXXX@qq.com']

# 创建一个带附件的实例
message = MIMEMultipart()
message['From'] = 'XXXXXXXX@163.com'
message['To'] = 'small mouses'
subject = "xxxx's python email"
message['Subject'] = Header(subject, 'utf-8')
#
# 邮件正文内容
message.attach(MIMEText('这是测试Python发送附件功能....', 'utf-8'))

# 构造附件1，传送当前目录下的test.txt文件
att1 = MIMEText(open('xxx.py', 'rb').read(), 'base64', 'utf-8')
att1['Content-Type'] = 'application/octet-stream'
# 这里的filename可以任意写，写什么名字 邮件中就显示什么名字
att1['Content-Disposition'] = 'attachment;filename:"lmc.py"'
message.attach(att1)



smtpObj = smtplib.SMTP()
smtpObj.connect(mail_host,mail_port)
smtpObj.login(mail_username, mail_password)
smtpObj.sendmail(mail_username, receivers, message.as_string())
print ("send success")
smtpObj.close();