'Accessing all open excel and outlook emails from Word Macro

I have developed a Word document containing a macro that can transfer all Content Control Values to any other open Word document. I would like to expand on this so it can look through any emails that are open for editing. Is this even possible? My current code relies on SelectContentControlsByTag, but I think this is exclusive to the Word API.

Private Sub DumpData_Click()

Dim updated As Boolean
Dim doc_updated As Integer
Dim msg As String
'Dim content_controls_collection As Collection

msg = ""

Set source_doc = Application.ActiveDocument

'For each open document that is not the active document (the active document is the source file containing the macro button and this script)
For Each destination_doc In Documents
    
If destination_doc <> source_doc Then
    
    updated = False
            
    'Look at each content control in the destination doc
    For Each content_control In destination_doc.ContentControls
        
        'Set content_controls_collection = Nothing
        
        CC_tag = content_control.Tag
    
        'If the tags are not empty
        If CC_tag <> "" Then
        
'                msg = msg & vbNewLine & "Found tag " & CC_tag & " in " & destination_doc.Name
            
            'find the corresponding content control, if it exists, in the source document
            If source_doc.SelectContentControlsByTag(CC_tag).Count > 0 Then
            
                'If the content control is the basic text type
                If content_control.Type = wdContentControlText Or _
                   content_control.Type = wdContentControlDate Or _
                   content_control.Type = wdContentControlRichText Then
            
                    content_control.Range.Text = source_doc.SelectContentControlsByTag(CC_tag).Item(1).Range.Text
                    updated = True
'                        msg = msg & vbNewLine & "Content Control was updated!"
                    Else
                         msg = msg & vbNewLine & CC_tag & " tag is a less common type of content control which I have not bothered to progam to transfer. It's type is " & content_control.Type
                    End If
'                Else
'                    msg = msg & vbNewLine & CC_tag & " tag not found in Project Form Data Source."
            End If
            
        End If
        
    Next content_control
    
    If updated = True Then
        msg = msg & vbNewLine & " - " & destination_doc.Path & Application.PathSeparator & destination_doc.Name
        doc_updated = doc_updated + 1
    End If

End If
    
Next destination_doc

If doc_updated > 0 Then
    msg = "Macro complete. The following open documents were found to contain matching Content Controls which are now updated:" & msg
Else
    msg = "No open files were found to contain matching Content Control Tags."
End If

MsgBox msg

End Sub


Sources

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Source: Stack Overflow

Solution Source