Python 3.3 POP3 Google mail

import poplib

pop = poplib.POP3_SSL("pop.gmail.com",995)
pop.user("帳號")
pop.pass_("密碼")

numMessages = len(pop.list()[1])
for i in range(numMessages):
    for j in pop.retr(i+1)[1]:
        print(j)

pop.quit()

參考資料：
https://support.google.com/mail/troubleshooter/1668960?hl=zh-Hant
http://docs.python.org/3/library/poplib.html