import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import 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'] = FROMADDR
msg['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

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_text
toaddrs = [toaddr] + cc + bcc
server = smtplib.SMTP('smtp.sunnydale.k12.ca.us')
server.set_debuglevel(1)
server.sendmail(fromaddr, toaddrs, message)
server.quit()