python SMTP发送邮件

• SMTP

SMTP是发送邮件的协议，Python内置对SMTP的支持，可以发送纯文本邮件、HTML邮件以及带附件的邮件。

Python对SMTP支持有smtplib和email两个模块，email负责构造邮件，smtplib负责发送邮件。

• SMTP发送正文+图片附件

import smtplib
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.header import Header
from email.utils import parseaddr, formataddr

from_addr = 'ys242775@sina.cn'
password = 'XXXX'
smtp_server = 'smtp.sina.cn'
to_addr = '24277569XX@qq.com'

def _format_addr(s): #
    name, addr = parseaddr(s)
    return formataddr((Header(name, 'utf-8').encode(),addr))


msg = MIMEMultipart()
#传TXT文件
att1 = MIMEText(open(r'C:UsersAdministratorDesktop1.txt','rb').read(), 'base64', 'utf-8')
att1['Content-Type'] = 'application/octet-stream'
att1["Content-Disposition"] = 'attachment; filename="test.txt"'
msg.attach(att1)

#传jpg文件作为附件
att2 = MIMEText(open(r'C:UsersAdministratorDesktop1.jpg','rb').read(), 'base64', 'utf-8')
att2["Content-Type"] = 'application/octet-stream'
att2["Content-Disposition"] = 'attachment; filename="mypicture.png"'
msg.attach(att2)

msg['From'] = _format_addr(u'yesheng <%s>' % from_addr) #发件人
msg['To'] = _format_addr(u'joe <%s>' % to_addr) #收件人
msg['Subject'] = Header(u'The second test email...','utf-8').encode() #主题

• SMTP发送html邮件+插入图片

#coding=utf8
import smtplib
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.header import Header
from email.utils import parseaddr, formataddr

from_addr = 'ys242775@sina.cn'
password = 'xxxxx'
smtp_server = 'smtp.sina.cn'
to_addr = '24277569xx@qq.com'

def _format_addr(s):
    name, addr = parseaddr(s)
    return formataddr((Header(name, 'utf-8').encode(),addr))

def send_txt_with_image(sender, receive):
    '''
    Args:
        sender: 发送邮箱
        receive: 接收邮箱
    Returns: 发送图片示例
    '''
　　#创建一个根实例
    msgRoot = MIMEMultipart('related')
    msgRoot['From'] = _format_addr(u'yesheng <%s>' % sender)
    msgRoot['To'] = _format_addr(u'joe <%s>' % receive)
    msgRoot['Subject'] = Header('测试邮件', 'utf-8')
　　#创建一个存放正文的实例，并添加入根实例
    msgAlternative = MIMEMultipart('alternative')
    msgRoot.attach(msgAlternative)
    #这里需要用双引号
    msg = """
    <p>Python 邮件发送测试...</p>
    <p>图片演示：</p>
    <p><img src="cid:0"></p>
    ""
    message = MIMEText(msg, 'html', 'utf-8') #这里需要设置html参数，传入'plain'表示纯文本，最后一定要用utf-8编码保证多语言兼容性
    # 第一个参数是邮件正文，'plain' 表示纯文本 #utf-8保证编码多语言兼容性
    msgAlternative.attach(message)
    fp = open(r'C:UsersAdministratorDesktop1.jpg','rb')
　　#创建图片示例，并添加到根实例
    msgImage = MIMEImage(fp.read())
    fp.close()
    msgImage.add_header('Content-ID','<0>')
    msgRoot.attach(msgImage)
    return msgRoot


server = smtplib.SMTP_SSL(smtp_server)
server.connect(smtp_server)
server.login(from_addr, password)
msg = send_txt_with_image(from_addr, to_addr) #这里可以选择是传图片+文字
server.sendmail(from_addr, [to_addr], msg.as_string())
server.quit()

参考：https://www.cnblogs.com/Zzbj/p/11477255.html

https://www.liaoxuefeng.com/wiki/1016959663602400/1017790702398272

# 创建一个存放正文的实例，并添加进根实例