92

我一直在使用 python 中的电子邮件模块，但我希望能够知道如何嵌入包含在 html 中的图像。

例如，如果身体是这样的

<img src="../path/image.png"></img>

我想将image.png嵌入到电子邮件中，该src属性应替换为content-id. 有人知道怎么做这个吗？

4

4 回答 4

175

这是我找到的一个例子。

配方 473810：发送带有嵌入图像和纯文本替代的 HTML 电子邮件：

HTML 是那些希望发送具有丰富文本、布局和图形的电子邮件的首选方法。通常希望在消息中嵌入图形，以便收件人可以直接显示消息，而无需进一步下载。

一些邮件代理不支持 HTML，或者他们的用户更喜欢接收纯文本消息。HTML 消息的发件人应包含纯文本消息作为这些用户的替代。

此配方发送带有单个嵌入图像和备用纯文本消息的简短 HTML 消息。

# Send an HTML email with an embedded image and a plain text message for
# email clients that don't want to display the HTML.

from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.MIMEImage import MIMEImage

# Define these once; use them twice!
strFrom = 'from@example.com'
strTo = 'to@example.com'

# Create the root message and fill in the from, to, and subject headers
msgRoot = MIMEMultipart('related')
msgRoot['Subject'] = 'test message'
msgRoot['From'] = strFrom
msgRoot['To'] = strTo
msgRoot.preamble = 'This is a multi-part message in MIME format.'

# Encapsulate the plain and HTML versions of the message body in an
# 'alternative' part, so message agents can decide which they want to display.
msgAlternative = MIMEMultipart('alternative')
msgRoot.attach(msgAlternative)

msgText = MIMEText('This is the alternative plain text message.')
msgAlternative.attach(msgText)

# We reference the image in the IMG SRC attribute by the ID we give it below
msgText = MIMEText('<b>Some <i>HTML</i> text</b> and an image.<br><img src="cid:image1"><br>Nifty!', 'html')
msgAlternative.attach(msgText)

# This example assumes the image is in the current directory
fp = open('test.jpg', 'rb')
msgImage = MIMEImage(fp.read())
fp.close()

# Define the image's ID as referenced above
msgImage.add_header('Content-ID', '<image1>')
msgRoot.attach(msgImage)

# Send the email (this example assumes SMTP authentication is required)
import smtplib
smtp = smtplib.SMTP()
smtp.connect('smtp.example.com')
smtp.login('exampleuser', 'examplepass')
smtp.sendmail(strFrom, strTo, msgRoot.as_string())
smtp.quit()
于 2009-05-28T13:48:27.260 回答
80

对于 Python 3.4 及更高版本。

公认的答案非常好，但仅适用于较旧的 Python 版本（2.x 和 3.3）。我认为它需要更新。

以下是在较新的 Python 版本（3.4 及更高版本）中执行此操作的方法：

from email.message import EmailMessage
from email.utils import make_msgid
import mimetypes

msg = EmailMessage()

# generic email headers
msg['Subject'] = 'Hello there'
msg['From'] = 'ABCD <abcd@xyz.com>'
msg['To'] = 'PQRS <pqrs@xyz.com>'

# set the plain text body
msg.set_content('This is a plain text body.')

# now create a Content-ID for the image
image_cid = make_msgid(domain='xyz.com')
# if `domain` argument isn't provided, it will 
# use your computer's name

# set an alternative html body
msg.add_alternative("""\
<html>
    <body>
        <p>This is an HTML body.<br>
           It also has an image.
        </p>
        <img src="cid:{image_cid}">
    </body>
</html>
""".format(image_cid=image_cid[1:-1]), subtype='html')
# image_cid looks like <long.random.number@xyz.com>
# to use it as the img src, we don't need `<` or `>`
# so we use [1:-1] to strip them off


# now open the image and attach it to the email
with open('path/to/image.jpg', 'rb') as img:

    # know the Content-Type of the image
    maintype, subtype = mimetypes.guess_type(img.name)[0].split('/')

    # attach it
    msg.get_payload()[1].add_related(img.read(), 
                                         maintype=maintype, 
                                         subtype=subtype, 
                                         cid=image_cid)


# the message is ready now
# you can write it to a file
# or send it using smtplib
于 2018-03-04T17:32:56.210 回答
2

我意识到 SMTP 和电子邮件库的某些事情是多么痛苦，我想我必须对它做点什么。我制作了一个库，可以更轻松地将图像嵌入到 HTML 中：

from redmail import EmailSender
email = EmailSender(host="<SMTP HOST>", port=0)

email.send(
    sender="me@example.com",
    receivers=["you@example.com"]
    subject="An email with image",
    html="""
        <h1>Look at this:</h1>
        {{ my_image }}
    """, 
    body_images={
        "my_image": "path/to/image.png"
    }
)

很抱歉晋升，但我认为这非常棒。您可以将图像提供为 Matplotlib Figure、 PillowImage或就像bytes您的图像采用这些格式一样。它使用 Jinja 进行模板化。

如果需要控制图片的大小，也可以这样做：

email.send(
    sender="me@example.com",
    receivers=["you@example.com"]
    subject="An email with image",
    html="""
        <h1>Look at this:</h1>
        <img src="{{ my_image.src }}" width=200 height=300>
    """, 
    body_images={
        "my_image": "path/to/image.png"
    }
)

你可以 pip 安装它：

pip install redmail

它（希望）是您发送电子邮件所需的一切（还有更多），并且经过了很好的测试。我还编写了大量文档：https ://red-mail.readthedocs.io/en/latest/ 并且可以在此处找到源代码。

于 2022-01-03T19:36:44.663 回答
-3

代码工作

    att = MIMEImage(imgData)
    att.add_header('Content-ID', f'<image{i}.{imgType}>')
    att.add_header('X-Attachment-Id', f'image{i}.{imgType}')
    att['Content-Disposition'] = f'inline; filename=image{i}.{imgType}'
    msg.attach(att)
于 2020-02-03T19:23:17.113 回答