Question

似乎很容易得到

From
To
Subject

等通过

import email
b = email.message_from_string(a)
bbb = b['from']
ccc = b['to']

假设"a"是原始电子邮件字符串，看起来像这样。

a = """From root@a1.local.tld Thu Jul 25 19:28:59 2013
Received: from a1.local.tld (localhost [127.0.0.1])
    by a1.local.tld (8.14.4/8.14.4) with ESMTP id r6Q2SxeQ003866
    for <ooo@a1.local.tld>; Thu, 25 Jul 2013 19:28:59 -0700
Received: (from root@localhost)
    by a1.local.tld (8.14.4/8.14.4/Submit) id r6Q2Sxbh003865;
    Thu, 25 Jul 2013 19:28:59 -0700
From: root@a1.local.tld
Subject: oooooooooooooooo
To: ooo@a1.local.tld
Cc: 
X-Originating-IP: 192.168.15.127
X-Mailer: Webmin 1.420
Message-Id: <1374805739.3861@a1>
Date: Thu, 25 Jul 2013 19:28:59 -0700 (PDT)
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="bound1374805739"

This is a multi-part message in MIME format.

--bound1374805739
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

ooooooooooooooooooooooooooooooooooooooooooooooo
ooooooooooooooooooooooooooooooooooooooooooooooo
ooooooooooooooooooooooooooooooooooooooooooooooo

--bound1374805739--"""

问题

如何通过python获取此电子邮件的Body？

到目前为止，这是我所知道的唯一代码，但我尚未对其进行测试。

if email.is_multipart():
    for part in email.get_payload():
        print part.get_payload()
else:
    print email.get_payload()

这是正确的方法吗？

或者可能有更简单的东西，比如......

import email
b = email.message_from_string(a)
bbb = b['body']

Answer 1

为了高度肯定你使用实际的电子邮件正文（但仍有可能你没有解析正确的部分），你必须跳过附件，并专注于普通或HTML部分（根据你的需要））进一步处理。

由于前面提到的附件可以并且经常是text / plain或text / html部分，因此这个非防弹样本会通过检查内容处置标题来跳过这些：

b = email.message_from_string(a)
body = ""

if b.is_multipart():
    for part in b.walk():
        ctype = part.get_content_type()
        cdispo = str(part.get('Content-Disposition'))

        # skip any text/plain (txt) attachments
        if ctype == 'text/plain' and 'attachment' not in cdispo:
            body = part.get_payload(decode=True)  # decode
            break
# not multipart - i.e. plain text, no attachments, keeping fingers crossed
else:
    body = b.get_payload(decode=True)

BTW，walk()在mime部分上进行了非常好的迭代，get_payload(decode=True)为你解码base64等工作做了很多工作。

一些背景 - 正如我暗示的那样，MIME电子邮件的精彩世界带来了许多“错误地”找到邮件正文的陷阱。在最简单的情况下，它位于唯一的“text / plain”部分，而get_payload（）非常诱人，但我们并不生活在一个简单的世界中 - 它通常被包含在多部分/替代，相关，混合等内容中。维基百科对其进行了严格的描述 - MIME，但考虑到以下所有这些案例都是有效的 - 而且很常见 - 人们必须考虑周围的安全网：

很常见 - 几乎可以通过普通编辑器（Gmail，Outlook）发送带附件的格式化文本：

multipart/mixed
 |
 +- multipart/related
 |   |
 |   +- multipart/alternative
 |   |   |
 |   |   +- text/plain
 |   |   +- text/html
 |   |      
 |   +- image/png
 |
 +-- application/msexcel

相对简单 - 只是替代表示：

multipart/alternative
 |
 +- text/plain
 +- text/html

无论好坏，这种结构也是有效的：

multipart/alternative
 |
 +- text/plain
 +- multipart/related
      |
      +- text/html
      +- image/jpeg

希望这有点帮助。

P.S。我的观点是不要轻易接近电子邮件 - 当你最不期望它时它会咬人：）

Answer 2

使用Message.get_payload

b = email.message_from_string(a)
if b.is_multipart():
    for payload in b.get_payload():
        # if payload.is_multipart(): ...
        print payload.get_payload()
else:
    print b.get_payload()

Answer 3

Python 3.6+提供了内置的便捷方法来查找和解码纯文本正文，如@Todor Minakov的答案。您可以使用EMailMessage.get_body()和get_content()方法：

msg = email.message_from_string(s, policy=email.policy.default)
body = msg.get_body(('plain',))
if body:
    body = body.get_content()
print(body)

请注意，如果没有（明显的）纯文本正文部分，则会显示None。

例如，如果您正在阅读一个mbox文件，您可以给邮箱构造函数一个EmailMessage工厂：

mbox = mailbox.mbox(mboxfile, factory=lambda f: email.message_from_binary_file(f, policy=email.policy.default), create=False)
for msg in mbox:
    ...

请注意，您必须通过email.policy.default作为政策，因为默认情况下不是 ...

Answer 4

python中没有b['body']。你必须使用get_payload。

if isinstance(mailEntity.get_payload(), list):
    for eachPayload in mailEntity.get_payload():
        ...do things you want...
        ...real mail body is in eachPayload.get_payload()...
else:
    ...means there is only text/plain part....
    ...use mailEntity.get_payload() to get the body...

祝你好运。

Answer 5

有很好的package可以用适当的文档解析电子邮件内容。

import mailparser

mail = mailparser.parse_from_file(f)
mail = mailparser.parse_from_file_obj(fp)
mail = mailparser.parse_from_string(raw_mail)
mail = mailparser.parse_from_bytes(byte_mail)

如何使用：

mail.attachments: list of all attachments
mail.body
mail.to

Answer 6

如果电子邮件是熊猫的数据框，而emails.message列中的电子邮件文本

## Helper functions
def get_text_from_email(msg):
    '''To get the content from email objects'''
    parts = []
    for part in msg.walk():
        if part.get_content_type() == 'text/plain':
            parts.append( part.get_payload() )
    return ''.join(parts)

def split_email_addresses(line):
    '''To separate multiple email addresses'''
    if line:
        addrs = line.split(',')
        addrs = frozenset(map(lambda x: x.strip(), addrs))
    else:
        addrs = None
    return addrs 

import email
# Parse the emails into a list email objects
messages = list(map(email.message_from_string, emails['message']))
emails.drop('message', axis=1, inplace=True)
# Get fields from parsed email objects
keys = messages[0].keys()
for key in keys:
    emails[key] = [doc[key] for doc in messages]
# Parse content from emails
emails['content'] = list(map(get_text_from_email, messages))
# Split multiple email addresses
emails['From'] = emails['From'].map(split_email_addresses)
emails['To'] = emails['To'].map(split_email_addresses)

# Extract the root of 'file' as 'user'
emails['user'] = emails['file'].map(lambda x:x.split('/')[0])
del messages

emails.head()

Answer 7

以下是每次都对我有用的代码（对于Outlook电子邮件）：

#to read Subjects and Body of email in a folder (or subfolder)

import win32com.client  
#import package

outlook = win32com.client.Dispatch("Outlook.Application").GetNamespace("MAPI")  
#create object

#get to the desired folder (MyEmail@xyz.com is my root folder)

root_folder = 
outlook.Folders['MyEmail@xyz.com'].Folders['Inbox'].Folders['SubFolderName']

#('Inbox' and 'SubFolderName' are the subfolders)

messages = root_folder.Items

for message in messages:
if message.Unread == True:    # gets only 'Unread' emails
    subject_content = message.subject
# to store subject lines of mails

    body_content = message.body
# to store Body of mails

    print(subject_content)
    print(body_content)

    message.Unread = True         # mark the mail as 'Read'
    message = messages.GetNext()  #iterate over mails

Python：如果原始电子邮件没有“正文”标记或任何内容，如何从原始电子邮件解析正文

7 个答案: