python 接收邮件示例：pop3与imap

首先是pop3与imap的区别：

简单来说主要区别就是imap可以不用把所有的邮件全部下载，就通过客户端直接对服务器上的邮件进行操作。IMAP它只下载邮件的主题，并不是把所有的邮件内容都下载下来.

=============================pop3=================================

import poplib  
  
emailServer = poplib.POP3('192.168.88.7')  
emailServer.user('[e-mail]')  
emailServer.pass_('123456')  

# 获取一些统计信息  
emailMsgNum, emailSize = emailServer.stat()  
print 'email number is %d and size is %d'%(emailMsgNum, emailSize)  
  
# 遍历邮件，并打印出每封邮件的标题  
for i in range(emailMsgNum):  
    for piece in emailServer.retr(i+1)[1]:  
        if piece.startswith('Subject'):  
            print '\t' + piece  
            break  
          
emailServer.quit() 

=============================imap=================================

import imaplib, string, email
M = imaplib.IMAP4_SSL("imap.gmail.com")
print M
try:
    try:
        M.login('[e-mail]','12345678')
    except Exception,e:
        print 'login error: %s' % e
        M.close()
    M.select()
    result, message = M.select()
    typ, data = M.search(None, 'ALL')
    for num in string.split(data[0]):
        try:
            typ, data = M.fetch(num, '(RFC822)')
            msg = email.message_from_string(data[0][1])
            print msg["From"]
            print msg["Subject"]
            print msg["Date"]
            print "_______________________________"
        except Exception,e:
            print 'got msg error: %s' % e            
    M.logout()
    M.close()
except Exception, e:
    print 'imap error: %s' % e
    M.close()