Thanks Ken.

Kyle and I want to store a bit of information in the original email so that
when someone replies to it we can programmatically read the information from
the original email now stored in the reply email and take a certain action.

We had thought that X-Headers be able to be used to carry over this
information but as you described below that isn't appropriate.

The next thought I had was to append a bit of text to the body of the
original email so that's carried over to the reply email's body but the
danger there is that the user may inadvertently delete it when composing the
reply.

The next thought was to follow the idea on Sue Mosher's posting thread at
http://www.outlookcode.com/threads.a...essageid=24242, in
particular:

"28-Sep-2007 06:31
Very cool indeed! Interesting idea using input type="hidden". Have you
seen any problem getting Outlook 2007 to include that tag in the reply,
given that it's one of the ignored elements per
http://msdn2.microsoft.com/en-us/library/aa338201.aspx ? "

But instead of input type="hidden" use an HTML property such as Class to
store the bit of information since we are using OL2007 and according to the
post input type="hidden" is ignored.

However the questions now remain:

a) What if the incoming email is simply a plain-text email? Can we add a
"Class" HTML attribute for our purposes only, even though it is not an HTML
or rich-text email?

b) What if the reply email being composed is set to plain text or Rich-Text?
Will there be any way of intercepting Outlook's conversion of a normal HTML
email or a) to plain text so we can get our little piece of information?

Basically all of this is to try and make a fast way of identifying the
original email replied to. I know there has been some posts on using the
conversation index attribute and using advanced search to find the original
using that but I seem to recall that wasn't bullet-proof. I think there were
some situations (such as moving emails to different folders?, Exchange
scenarios?) where it wouldn't work. If I am wrong on that please let me
know.

TIA