本文以实例形式展示了Python发送Email功能的实现方法，有不错的实用价值的技巧，且功能较为完善。具体实现方法如下：

主要功能代码如下：

#/usr/bin/env python
# -*- encoding=utf-8 -*-

import base64
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

class CCSendMail:
  def __init__(self,host=\"your.mailhost.com\",username=\'fromuser@xxx.com\',password=\'passwd\'):
    self.__smtp=smtplib.SMTP(host)
    self.__subject=None
    self.__content=None
    self.__from=None
    self.__to=[]
    self.__style=\'html\'
    self.__charset=\'gb2312\'
    self.username = username
    self.password = password
    self.fromAlias=\'fromuser\' #发件人别名
    self.from2=\'\'
    
  def close(self):
    try:
      self.__smtp.quit()
    except Exception ,e:
      pass  
  def setFromAlias(self,alias):
    self.fromAlias=alias
  def setStyle(self,style):
    self.__style = style
  def setFrom2(self,from2):
    self.from2=from2
    
  def setSubject(self,subject):
    self.__subject=subject
    
  def setContent(self,content):
    self.__content=content
    
  def setFrom(self,address):
    self.__from=address
    
  def addTo(self,address):
    self.__to.append(address)
    
  def setCharset(self,charset):
    self.__charset=charset
    
  def send(self):
    try:
      self.__smtp.set_debuglevel(1)
      
      #login if necessary
      if self.username and self.password:
        self.__smtp.login(self.username,self.password)
        
      msgRoot = MIMEMultipart(\'related\')
      msgRoot[\'Subject\'] = self.__subject
      aliasB6=base64.encodestring(self.fromAlias.encode(self.__charset))
      if len(self.from2)==0:
        msgRoot[\'From\'] = \"=?%s?B?%s?=%s\"%(self.__charset,aliasB6.strip(),self.__from)
      else:
        msgRoot[\'From\'] = \"%s\"%(self.from2)
      msgRoot[\'To\'] = \";\".join(self.__to)
      
      msgAlternative = MIMEMultipart(\'alternative\')
      msgRoot.attach(msgAlternative)
      
      msgText = MIMEText(self.__content, self.__style,self.__charset)
      msgAlternative.attach(msgText)

      self.__smtp.sendmail(self.__from,self.__to,msgRoot.as_string())
      return True
    except Exception,e:
      print \"Error \",e
      return False
    
  def clearRecipient(self):
    self.__to = []
  
  #给单个人发送邮件
  def sendHtml(self,address,title,content):
    self.setStyle(\'html\')
    self.setFrom(\"<%s>\"%self.username)
    if not isinstance(content,str):
      content = content.encode(\'gb18030\')
    self.addTo(address)
    self.setSubject(title)
    self.setContent(content)
    ret = self.send()
    self.close()
    return ret
  
  #群发邮件
  def sendMoreHtml(self,addressList,title,content):
    self.setStyle(\'html\')
    self.setFrom(\"<%s>\"%self.username)
    if not isinstance(content,str):
      content = content.encode(\'gb18030\')
    for address in addressList:
      self.addTo(address)
    self.setSubject(title)
    self.setContent(content)
    ret = self.send()
    self.close()
    return ret

#测试
def main():
  send=CCSendMail()
  send.sendHtml(\'touser@xxx.com\',u\'邮件标题\',u\'邮件内容\')
  #send.sendMoreHtml([touser1@xx.com,touser2@xx.com],u\'邮件标题\',u\'邮件内容\')
 
if __name__==\'__main__\':
  main()

希望本文所述实例对大家的Python程序设计有一定的帮助。