內嵌網頁指的是iframe嗎？

根據MSDN(http://msdn.microsoft.com/en-us/library/aa338201.aspx)所述...
1.Microsoft Office Outlook 2007 uses the HTML parsing and rendering engine from Microsoft Office Word 2007 to display HTML message bodies. The same HTML and cascading style sheets (CSS) support available in Word 2007 is available in Outlook 2007.
簡單的說就是Outlook 2007編輯顯示用的是Word 2007 的引擎，所以功能和Word 2007 一樣。

2.The following is a list of top-level HTML elements that the HTML 4.01 specification supports, but that Word 2007 does not support. Note that Word 2007 considers unsupported HTML elements to be unknown elements.
以下項目不支援
Word 2007 does not support:

applet

bdo

button

form

iframe

input

isindex

menu

noframes

noscript

object

optgroup

option

param

q

script

select

所以應該就是「不支援iframe」吧

我在自己的郵件軟體上測試，將網頁畫面複製後貼到內文就可以了(我沒有Outlook 2007)。