Python如何基于smtplib发不同格式的邮件

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

# smtp服务器信息
smtp_server = 'smtp.163.com'
server_port = 465

# 发送方信息
sender = '发送的邮箱地址'
password = '发送邮箱的smtp授权码'

# 收件人地址，列表可发给多人
receivers = ['123456@qq.com', '3123123@qq.com', '12312@qq.com']

# 邮箱的正文内容，参数分别为内容，格式(plain 为纯文本)，编码
msg = MIMEText('Here is content.', 'plain', 'utf-8')

# 邮件头信息
msg['From'] = Header(sender) # 发件人
msg['To'] = Header(', '.join(receivers)) # 发到哪里，参数为字符串
msg['Subject'] = Header('This is subject') # 邮件标题

# 发送邮件的操作
try:
  server = smtplib.SMTP_SSL() # SSL加密传输
  server.connect(smtp_server, server_port) # 连接smtp，服务器和端口
  server.login(sender, password) # 登录发信邮箱
  server.sendmail(sender, receivers, msg.as_string()) # 发送邮件
  server.quit() # 关闭服务器
  print('发送成功')

except smtplib.SMTPException:
  print('发送失败')

import smtplib
from email.header import Header
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

# smtp服务器信息
smtp_server = 'smtp.163.com'
server_port = 465

# 发送方信息
sender = '发送的邮箱地址'
password = '发送邮箱的smtp授权码'

# 收件人地址，列表可发给多人
receivers = ['969831239@qq.com', '124123989@qq.com']

# 实例化，先添加正文内容
msg = MIMEMultipart()
msg.attach(MIMEText('This is content.', 'plain', 'utf-8'))

# 添加附件1
att1 = MIMEApplication(open('tips.py', 'rb').read(), 'utf-8')
att1['Content-Disposition'] = 'attachment; filename="down.py"'  # filename随便起，是接收到的附件显示名称
# att1["Content-Type"] = 'application/octet-stream'  Content-Type默认为application/octet-stream
msg.attach(att1)

# 添加附件2
att2 = MIMEApplication(open('source.jpg', 'rb').read(), 'utf-8')
att2['Content-Disposition'] = 'attachment; filename="girl.jpg"'
msg.attach(att2)

# 邮件头信息
msg['From'] = Header(sender) # 发件人
msg['To'] = Header(', '.join(receivers)) # 发到哪里，参数为字符串
msg['Subject'] = Header('This is subject') # 邮件标题

# 发送邮件的操作
try:
  server = smtplib.SMTP_SSL() # SSL加密传输
  server.connect(smtp_server, server_port) # 连接smtp，服务器和端口
  server.login(sender, password) # 登录发信邮箱
  server.sendmail(sender, receivers, msg.as_string()) # 发送邮件
  server.quit() # 关闭服务器
  print('发送成功')

except smtplib.SMTPException:
  print('发送失败')

import smtplib
from email.header import Header
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

# smtp服务器信息
smtp_server = 'smtp.qq.com'
server_port = 465

# 发送方信息
sender = '发送的邮箱地址'
password = '发送邮箱的smtp授权码'

# 收件人地址，列表可发给多人
receivers = ['dsaisu@163.com', '76das23021@qq.com', '253das58570@qq.com']

# 实例化，添加正文内容，html格式，<img>标签 指定cid属性的值等于上传图片中Content-ID的值
msg = MIMEMultipart()
msg.attach(MIMEText('<img src="/UploadFiles/2021-04-08/cid:demo">

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