HTML 电子邮件正文是否可以引用作为附件发送的文件(在同一封电子邮件中)?
问题描述：
HTML 电子邮件可以使用图像附件作为标签的来源吗?
Can an HTML email use an image attachment as the source for tag?
假设我要发送一封包含每个电子邮件特定图像的电子邮件 - 它们作为电子邮件的附件发送 - 电子邮件中的 HTML 正文可以使用这些图像吗?我的猜测是没有，但是是否有任何hacks 或解决方法可以使它起作用?
Let's say I am sending an email with per-email specific images - and they are sent as an attachment to the email - can the HTML body within the email use the those images? My guess would be no, but are there any hacks or workarounds that would make it work?
谢谢，
答
无需修改.使用 cid: URI 方案
No hacks needed. Use the cid: URI scheme
--boundary-example 1
Content-Type: Text/HTML; charset=US-ASCII
to the other body part, for example through a statement such as:
<IMG SRC="cid:foo4*foo1@bar.net" ALT="IETF logo">
--boundary-example-1
Content-ID: <foo4*foo1@bar.net>
Content-Type: IMAGE/GIF
Content-Transfer-Encoding: BASE64
R0lGODlhGAGgAPEAAP/////ZRaCgoAAAACH+PUNvcHlyaWdodCAoQykgMTk5
NSBJRVRGLiBVbmF1dGhvcml6ZWQgZHVwbGljYXRpb24gcHJvaGliaXRlZC4A
etc...
--boundary-example-1--