您必须确保这些行不会意外断开（如上所示，尽管很难说这是否是复制粘贴问题）-带有完整的消息，例如：
Received: (qmail 8580 invoked from network); 15 Jun 2010 21:43:22 -0400Received: from mail-fx0-f44.google.com (209.85.161.44) by ip-73-187-35-131.ip.secureserver.net with SMTP; 15 Jun 2010 21:43:22 -0400Received: by fxm19 with SMTP id 19so170709fxm.3 for <username@domain.com>; Tue, 15 Jun 2010 18:47:33 -0700 (PDT)MIME-Version: 1.0Received: by 10.103.84.1 with SMTP id m1mr2774225mul.26.1276652853684; Tue, 15 Jun 2010 18:47:33 -0700 (PDT)Received: by 10.123.143.4 with HTTP; Tue, 15 Jun 2010 18:47:33 -0700 (PDT)Date: Tue, 15 Jun 2010 20:47:33 -0500Message-ID: <AANLkTikFsIjJ3KYW1HJWcAqQlGXNiXE2YMzrj39I0tdB@mail.gmail.com>Subject: TEST 12From: Full Name <username@sender.com>To: username@domain.comContent-Type: text/plain; charset=ISO-8859-1ONETWOTHREE
然后
msg = email.message_from_string(msgtxt)print msg['Subject']
TEST 12根据需要打印。
