我看过其他几个帖子,包括：
Sending Multipart html emails which contain embedded images
creating a MIME email template with images to send with python / django
这些与smtplib和电子邮件的python文档一起让我接近.我正在使用下面的代码创建一个嵌入了简单jpg的电子邮件.如果我将电子邮件发送到gmail,它将显示嵌入图像正常但outlook 2013不会.
import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.MIMEImage import MIMEImage
From = ''
To = ''
msg = MIMEMultipart()
msg['Subject'] = 'image test message'
msg['From'] = From
msg['To'] = To
text = 'This is sample text from me'
html = '''
<html>
<head>
<title> this is a test title </title>
</head>
<body>
<p> Test me <br>
Another line <br>
This is the image you were looking for <img src="cid:test_image"><br>
This will teach you not to click on links in strange <a href="http://purple.com">emails</a>
</p>
</body>
</html>
'''
part1 = MIMEText(text, 'plain')
part2 = MIMEText(html, 'html')
msg.attach(part1)
msg.attach(part2)
img_data = open('image.jpg', 'rb').read()
img = MIMEImage(img_data, 'jpeg')
img.add_header('Content-Id', '<test_image>')
msg.attach(img)
s = smtplib.SMTP('localhost')
s.sendmail(From, To, msg.as_string())
s.quit()
我已经检查了Outlook中我能想到的所有下载和安全设置,并且它们没问题.我还将发件人添加到安全发件人列表中.我可以使用Outlook中的传统工具接收使用嵌入图像创建的其他电子邮件.从我一直在做的阅读和查看收到的电子邮件的来源看来,outlook不知道在哪里可以找到图像.此电子邮件也没有附件.下面是我右键单击电子邮件并查看源代码时获得的内容.
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><title> this is a test title </title>
</head>
<body>
<p> Test me <br>
Another line <br>
This is the image you were looking for <img src="cid:test_image"><br>
This will teach you not to click on links in strange <a href="http://purple.com">emails</a>
</p>
</body>
</html>
我目前认为它与内容类型有关,或者我只是简单搞砸了代码.我认为代码很好,因为gmail显示图像正常,当我从gmail转发到outlook时,转发的消息显示正常.
最佳答案 编辑2：
首先尝试没有简单的文本版本：
Content-Type: multipart/related;
boundary="----=_NextPart_000_0009_01CEC44B.4C788080"
当这显示图像时,请尝试以下操作并将元素放入另一个部分,如下所示：
Subject: ...
From: ...
To: ...
Content-Type: multipart/related;
type="multipart/alternative";
boundary="----=_NextPart_000_0009_01CEC44B.4C788080"
------=_NextPart_000_0009_01CEC44B.4C788080
Content-Type: multipart/alternative;
boundary="----=_NextPart_001_000A_01CEC44B.4C788080"
------=_NextPart_001_000A_01CEC44B.4C788080
Content-Type: text/plain;
charset="ISO-8859-15"
Content-Transfer-Encoding: quoted-printable
My Simple text
------=_NextPart_001_000A_01CEC44B.4C788080
Content-Type: text/html;
charset="ISO-8859-15"
Content-Transfer-Encoding: quoted-printable
My HTML Text
------=_NextPart_001_000A_01CEC44B.4C788080--
------=_NextPart_000_0009_01CEC44B.4C788080
Content-Type: image/png;
name="caddiigg.png"
Content-Transfer-Encoding: base64
Content-ID: <38F81D2D49CB42B2AD8F93F5CF01BCA1@SKNB>
iVBORw0KGgoAAAANSUhEUgAAAxcAAAH0CAIAAADADUduAAAgAElEQVR4nEy8adP02H3ex0+TFymZ
5JAzw01OpazZOVS2SjkvYpHzzELasiuOK4tLkhVJMcWZu7E0loN96x07cPZzsPR2P8+QlPOh8gL9
DFn1L
------=_NextPart_000_0009_01CEC44B.4C788080--
目前,源代码显示如下电子邮件：
Content-Type: multipart/mixed; boundary="===============0661849094=="
MIME-Version: 1.0
Subject: image test message
From:
To:
--===============0661849094==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
This is sample text from me
--===============0661849094==
Content-Type: text/html; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
<html>
<head>
<title> this is a test title </title>
</head>
<body>
<p> Test me <br>
Another line <br>
This is the image you were looking for <img src="cid:test_image"><br>
This will teach you not to click on links in strange <a href="http://purple.com">emails</a>
</p>
</body>
</html>
--===============0661849094==
Content-Type: image/jpeg
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Id: <test_image>
YmxhYmxh
--===============0661849094==--
编辑1：
这就是电子邮件的外观：
...
<BR><IMG alt=3D""=20
src=3D"cid:38F81D2D49CB42B2AD8F93F5CF01BCA1@SKNB">
...
------=_NextPart_000_0009_01CEC44B.4C788080
Content-Type: image/png;
name="caddiigg.png"
Content-Transfer-Encoding: base64
Content-ID: <38F81D2D49CB42B2AD8F93F5CF01BCA1@SKNB>
iVBORw0KGgoAAAANSUhEUg ....
我看到了一个区别：Content-ID – 一个大写的D.
