Python:使用多个接收器发送多部分消息

Question

我已经提到了这些帖子——这里，这里。请不要将其标记为重复

我正在尝试使用python smtplib 发送电子邮件

rec_list.append(temp_email_df.iloc[0,4:].to_string(header=False, index=False))
print(rec_list) # this list contains one email id
print(type(rec_list))
message = MIMEMultipart()
message['Subject'] = 'For your review'
message['From'] = '[e-mail]'
message['To'] = ", ".join(rec_list)

我的收件人电子邮件地址来自熊猫数据帧，如上所示。

后来，根据堆栈溢出的建议，我已经使用了join运算符，并将它们放在了列表中。

我的send_message代码如下

msg_body = message.as_string()
server = SMTP('test.com', 25)
#server.send_message(msg_body,message['From'],message['To']) # doesn't work
server.send_message(message['From'],rec_list,msg_body) # doesn;t work
server.quit() 
rec_list.clear()

我收到错误消息，如下所示

--->71服务器.send_message(消息[来自]，rec_list，msg_body(72服务器.quit((73 rec_list.clear((

send_message中的~\Anaconda3\lib\smtplib.py(self，msg，from_addr，to_addrs、mail_options、rcpt_options(942943 self.ehlo_or_helo_if_needed((-->944 reset=msg.get_all("重新发送日期"(945如果resent为None：946 header_prefix=''

AttributeError:"str"对象没有属性"get_all">

Answer 1

问题是您使用的是send_message((，而您应该使用sendmail((。send_message方法设计用于处理EmailMessage对象，而您使用的是MIMEMultipart对象。

以下是如何发送带有附件的电子邮件：

首先，启动本地调试服务器(仅用于测试(：

$ python -m smtpd -n -c DebuggingServer localhost:1025

现在发送实际的电子邮件：

import smtplib
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
message = MIMEMultipart()
message.attach(MIMEText('Test'))
part = MIMEApplication('Attachment', Name='file.txt')
part['Content-Disposition'] = 'attachment; filename="file.txt"'
message.attach(part)
sender = '[e-mail]'
receivers = ['[e-mail]', '[e-mail]']
message['Subject'] = 'Test Email'
message['From'] = sender
message['To'] = ', '.join(receivers)
with smtplib.SMTP('localhost', 1025) as smtp:
smtp.sendmail(sender, receivers, message.as_string())

这会在调试服务器上产生以下输出：

---------- MESSAGE FOLLOWS ----------
b'Content-Type: multipart/mixed; boundary="===============8897222788102853002=="'
b'MIME-Version: 1.0'
b'Subject: Test Email'
b'From: [e-mail]'
b'To: [e-mail], [e-mail]'
b'X-Peer: ::1'
b''
b'--===============8897222788102853002=='
b'Content-Type: text/plain; charset="us-ascii"'
b'MIME-Version: 1.0'
b'Content-Transfer-Encoding: 7bit'
b''
b'Test'
b'--===============8897222788102853002=='
b'Content-Type: application/octet-stream; Name="file.txt"'
b'MIME-Version: 1.0'
b'Content-Transfer-Encoding: base64'
b'Content-Disposition: attachment; filename="file.txt"'
b''
b'QXR0YWNobWVudA=='
b''
b'--===============8897222788102853002==--'
------------ END MESSAGE ------------