Python网络编程：E-mail服务(八) 实现抄送和密送功能

来源：互联网发布：java servlet菜鸟编辑：程序博客网时间：2024/06/10 02:15

简介

本文介绍如何通过smtp模块实现邮件的抄送和密送功能。

抄送功能实现

在发送邮件时，除了发送给相关的责任人，有时还需要知会某些人。这时就需要在邮件里指定抄送人员列表。相关实现如下：

import smtplibfrom email.mime.multipart import MIMEMultipartfrom email.mime.text import MIMETextimport osFROMADDR = "myaddr@server.com"PASSWORD = 'foo'TOADDR = ['toaddr1@server.com', 'toaddr2@server.com']CCADDR = ['ccaddr1@server.com', 'ccaddr2@server.com']# Create message container - the correct MIME type is multipart/alternative.msg = MIMEMultipart('alternative')msg['Subject'] = 'Test'msg['From'] = FROMADDRmsg['To'] = ', '.join(TOADDR)msg['Cc'] = ', '.join(CCADDR)# Create the body of the message (an HTML version).text = """Hi  this is the body"""# Record the MIME types of both parts - text/plain and text/html.body = MIMEText(text, 'plain')# Attach parts into message container.msg.attach(body)# Send the message via local SMTP server.s = smtplib.SMTP('server.com', 587)s.sendmail(FROMADDR, TOADDR + CCADDR, msg.as_string())s.quit()

这里需要注意的是，需要将所以发送和抄送人员以列表的形式，传送给sendmail(from_addr, to_addrs, msg, mail_options=[], rcpt_options=[])函数的to_addrs参数。否则CC功能失效。

实现BCC功能

用户如果需要实现密送（BCC）功能，和上面介绍的抄送功能类似。参考代码实现：

oaddr = 'buffy@sunnydale.k12.ca.us'cc = ['alexander@sunydale.k12.ca.us','willow@sunnydale.k12.ca.us']bcc = ['chairman@slayerscouncil.uk']fromaddr = 'giles@sunnydale.k12.ca.us'message_subject = "disturbance in sector 7"message_text = "Three are dead in an attack in the sewers below sector 7."message = "From: %s\r\n" % fromaddr        + "To: %s\r\n" % toaddr        + "CC: %s\r\n" % ",".join(cc)        + "Subject: %s\r\n" % message_subject        + "\r\n"         + message_texttoaddrs = [toaddr] + cc + bccserver = smtplib.SMTP('smtp.sunnydale.k12.ca.us')server.set_debuglevel(1)server.sendmail(fromaddr, toaddrs, message)server.quit()

总结

TO, CC, BCC仅在文本头存在区别，在SMTP级别来看，TO, CC, BCC都是接收者。因此sendmail( )函数的to_addrs必须是所有接收者的列表。

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