python使用smtplib和MIMEText发送邮件
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本章以qq为例，使用前先在邮箱-设置-账户-开通POP3/SMTP服务，需要发送手机验证码，返回一个授权码
代码
import smtplib
from email.mime.text import MIMEText
def sendmail(subject, content):
email_host = 'smtp.qq.com' # 发送者是qq邮箱
email_user = '你填写授权码的qq邮箱@qq.com' # 发送者账号
email_pwd = '你的授权码' # 发送者密码
maillist ='你的接受者账号@qq.com' # 接收者账号，本来想写成[]list的，但是报错，还没解决！
me = email_user
msg = MIMEText(content, <span class="hljs-string">'html'</span>, <span class="hljs-string">'utf-8'</span>) <span class="hljs-comment"># 邮件内容，三个参数：第一个为文本内容，第二个 html 设置文本格式，第三个 utf-8 设置编码</span>
msg[<span class="hljs-string">'Subject'</span>] = subject <span class="hljs-comment"># 邮件主题</span>
msg[<span class="hljs-string">'From'</span>] = me <span class="hljs-comment"># 发送者账号</span>
msg[<span class="hljs-string">'To'</span>] = maillist <span class="hljs-comment"># 接收者账号列表（列表没实现）</span>
smtp = smtplib.SMTP(email_host) <span class="hljs-comment"># 如上变量定义的，是qq邮箱</span>
smtp.login(email_user, email_pwd) <span class="hljs-comment"># 发送者的邮箱账号，密码</span>
smtp.sendmail(me, maillist, msg.as_string()) <span class="hljs-comment"># 参数分别是发送者，接收者，第三个不知道</span>
smtp.quit() <span class="hljs-comment"># 发送完毕后退出smtp</span>
<span class="hljs-keyword">print</span> (<span class="hljs-string">'email send success.'</span>)
sendmail(‘主题’, ‘内容’) # 调用发送邮箱的函数
demo1.py
# smtp =>simple mail transfer protocol 简单邮件传输协议
import smtplib
import email # 文件名不可以和引入的库同名
from email.mime.image import MIMEImage # 图片类型邮件
from email.mime.text import MIMEText # MIME 多用于邮件扩充协议
from email.mime.multipart import MIMEMultipart # 创建附件类型
HOST = ‘smtp.qq.com’ # 调用的邮箱借借口
SUBJECT = ‘发送了一封测试邮件’ # 设置邮件标题
FROM = ‘你的授权码邮箱@qq.com’ # 发件人的邮箱需先设置开启smtp协议
TO = ‘发送者qq邮箱@qq.com’ # 设置收件人的邮箱（可以一次发给多个人,用逗号分隔）
message = MIMEMultipart(‘related’) # 邮件信息，内容为空 #相当于信封##related表示使用内嵌资源的形式，将邮件发送给对方
def sendmail(HOST, SUBJECT,FROM,TO,message):
“”"
发送邮件主体到对方邮箱
:发送信息参数说明:
1.内容必须是字符串
2.内容形式，文本类型默认为plain
3.内容编码使用utf-8
:其他：
图片和excel文件需要和本脚本一个目录下
“”"
<span class="hljs-comment"># ===========发送信息内容=============</span>
<span class="hljs-comment"># message_html = MIMEText('shuai123 消灭不开行', 'plain', 'utf-8')</span>
message_html = MIMEText(<span class="hljs-string">'<h1 style="color:red；font-size:100px">测试信息已收到</h1><img src="cid:small">'</span>, <span class="hljs-string">'html'</span>, <span class="hljs-string">'utf-8'</span>)
message.attach(message_html)
<span class="hljs-comment"># ===========发送图片-=============</span>
<span class="hljs-comment">#发送图片-预览信息</span>
image_data = open(<span class="hljs-string">'email_demo.jpg'</span>, <span class="hljs-string">'rb'</span>)
message_image = MIMEImage(image_data.read())
image_data.close()<span class="hljs-comment"># 关闭刚才打开的文件</span>
message_image.add_header(<span class="hljs-string">'Content-ID'</span>, <span class="hljs-string">'small'</span>)
message.attach(message_image)<span class="hljs-comment"># 添加图片文件到邮件信息中去</span>
<span class="hljs-comment">#发送图片-附件</span>
message_image = MIMEText(open(<span class="hljs-string">'email_demo.jpg'</span>, <span class="hljs-string">'rb'</span>).read(), <span class="hljs-string">'base64'</span>, <span class="hljs-string">'utf-8'</span>)
message_image[<span class="hljs-string">'Content-disposition'</span>] = <span class="hljs-string">'attachment;filename="email_demo_change.jpg"'</span><span class="hljs-comment"># 设置图片在附件当中的名字</span>
message.attach(message_image)<span class="hljs-comment"># 添加图片文件到邮件-附件中去</span>
<span class="hljs-comment"># ===========发送excel-附件=============</span>
message_xlsx = MIMEText(open(<span class="hljs-string">'email_demo.xlsx'</span>, <span class="hljs-string">'rb'</span>).read(), <span class="hljs-string">'base64'</span>, <span class="hljs-string">'utf-8'</span>)<span class="hljs-comment"># 将xlsx文件作为内容发送到对方的邮箱读取excel，rb形式读取，对于MIMEText()来说默认的编码形式是base64 对于二进制文件来说没有设置base64，会出现乱码</span>
message_xlsx[<span class="hljs-string">'Content-Disposition'</span>] = <span class="hljs-string">'attachment;filename="email_demo_change.xlsx"'</span><span class="hljs-comment"># 设置文件在附件当中的名字</span>
message.attach(message_xlsx)<span class="hljs-comment"># 添加excel文件到邮件-附件中去</span>
<span class="hljs-comment"># ===========配置相关-=============</span>
message[<span class="hljs-string">'From'</span>] = FROM <span class="hljs-comment"># 设置邮件发件人</span>
message[<span class="hljs-string">'TO'</span>] = TO <span class="hljs-comment"># 设置邮件收件人</span>
message[<span class="hljs-string">'Subject'</span>] = SUBJECT <span class="hljs-comment"># 设置邮件标题</span>
email_client = smtplib.SMTP_SSL()<span class="hljs-comment"># 获取江建有奖传输协议证书</span>
email_client.connect(HOST, <span class="hljs-string">'465'</span>)<span class="hljs-comment"># 设置发送域名，端口465</span>
result = email_client.login(FROM, <span class="hljs-string">'你的QQ授权码'</span>) <span class="hljs-comment"># qq授权码</span>
print(<span class="hljs-string">'登录结果'</span>, result)
<span class="hljs-comment"># ===========操作=============</span>
email_client.sendmail(from_addr=FROM, to_addrs=TO.split(<span class="hljs-string">','</span>), msg=message.as_string()) <span class="hljs-comment">#发送邮件指令</span>
email_client.close()<span class="hljs-comment"># 关闭邮件发送客户端</span>
if name == ‘main’:
sendmail(HOST=HOST, SUBJECT=SUBJECT,FROM=FROM,TO=TO,message=message)
demo2.py
参考文档
1.使用Python来操作邮箱：https://blog.csdn.net/qq_38059635/article/details/81569081
2.python3 发邮件 smtplib & email 库：https://www.cnblogs.com/vivivi/p/5952093.html
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