Python使用smtplib模块发送纯文本、HTML及带附件邮件详解

#coding:utf-8
import sys
reload(sys)
sys.setdefaultencoding('utf8')
import smtplib
from smtplib import SMTP
from email.mime.text import MIMEText
from email.header import Header

#构造纯文本邮件内容
msg = MIMEText('hello,send by Python.....','plain','utf-8')

#发送者邮箱
sender = 'xxxxx@XXXXX.com.cn'

#发送者的登陆用户名和密码
user = 'xxxxx@XXXX.com.cn'
password = 'xxxxxx'

#发送者邮箱的SMTP服务器地址
smtpserver = 'xxxx'

#接收者的邮箱地址
receiver = ['xxxxxx@qq.com','xxxxxx@outlook.com'] #receiver 可以是一个list

smtp = smtplib.SMTP() #实例化SMTP对象
smtp.connect(smtpserver,25) #（缺省）默认端口是25 也可以根据服务器进行设定
smtp.login(user,password) #登陆smtp服务器
smtp.sendmail(sender,receiver,msg.as_string()) #发送邮件 ，这里有三个参数
'''
login()方法用来登录SMTP服务器，sendmail()方法就是发邮件，由于可以一次发给多个人，所以传入一个list，邮件正文
是一个str，as_string()把MIMEText对象变成str。
'''
smtp.quit()

msg = MIMEText('hello,send by Python.....','plain','utf-8')
msg['From'] = Header('Python测试','utf-8')
msg['To'] = Header('管理员','utf-8')
subject = 'python SMTP 测试邮件'
msg['Subject'] = Header(subject,'utf-8') 

msg = MIMEText('<html><h1>你好！<h1><html>','html','utf-8') 
#发送HTML格式邮件就只需要把对应的第二个参数改为html即可 

#coding:utf-8
import sys
reload(sys)
sys.setdefaultencoding('utf8')
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header

#发送邮件服务器
smtpserver = 'xxxxx'
#发送邮箱用户名和密码
user = 'xxxxxx'
password = 'xxxxxx'
#发送邮箱
sender = 'xxxxx'
#接受邮箱
receiver = 'xxxxxxx'

#创建一个带附件的实例
message = MIMEMultipart()
message['From'] = Header('Python 测试','utf-8')
message['To'] = Header('测试','utf-8')
subject = 'Python SMTP邮件测试'
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....','plain','utf-8'))

#构造附件1，传送当前目录下的test.txt文件
att1 = MIMEText(open('123.txt','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:"123.txt"'
message.attach(att1)

smtp = smtplib.SMTP()
smtp.connect(smtpserver,25)
smtp.login(user,password)
smtp.sendmail(sender,receiver,message.as_string())
smtp.quit()