Sending email from different email account in Outlook 2003

Nope, SenderEmailAddress is a read-only property.

Up'd the points as this seems to be a difficult one to solve. I too still have not found a solution either with COM or CDO.

That does indeed work, but only if you are not using Word as your email editor, which I am. I've noticed the Account control is buried in a commandbar called Envelope, but its controls do not seem to be accessible. Is there a way to get this to work with Word?

Also, I notice that you have to display the message before you can access the controls collection, as per your idea. The process I am trying to write could be forwading many emails, so to have the items flashing on the screening isn't that "elegant".

I understand.  Personally, I avoid using Word as my email editor like the plague.  I know it offers a number of advanced features, but it also causes far more problems than it's worth (in my opinion).  That aside, even if the code could be modified to work with Word I don't know of any way to avoid displaying the messages on screen to make this work.  Microsoft simply didn't expose the properties/methods necessary to do this programmatically behind the scenes.  

So, the question is, can the options in Outlook to set Word as the editor be manipulated via code, so the routine can disable the use of Word as it starts and before it creates any new mailitems?

It is possible to change the editor via code.  The editor is controlled by a registry key.  That key is HKCU\Software\Microsoft\Office\11.0\Outlook\Options\Mail\EditorPreference.  It appears that a value of 131072 tells Outlook to use its internal editor, while 131073 sets it to use Word.  The code below will write a registry value.

Dim objShell
Set objShell = CreateObject("Wscript.Shell")
objShell.RegWrite "HKCU\Software\Microsoft\Office\11.0\Outlook\Options\Mail\EditorPreference", 131072, "REG_DWORD"
Set objShell = Nothing

I haven't tested to see if this will switch the editor while Outlook is open.  Sometimes a registry change isn't picked up until the next time the software is loaded.  If this does work, then you'd want to reverse the process at the end of your routine.

Well, I've tried it and you're right, the setting does not take until you restart Outlook. Do you think there could be an Windows API call that would tell Outlook to re-read the registry; a bit like changing the option directly in the application?

Sorry, I don't know the answer to that one.  

We'll call it a day on this one. Thanks very much for you help, hope we can chat again about another "foxing" problem :-]