When I click “Subject” I would expect that the yellow items are grouped together. The replied mails should be in the same group as the original mails, even if they have the prefix “Re:” or “Fwd:” in their subjects.
![Figure: The yellow items should be in the same group](https://bettersoftwaresuggestions.com/wp-content/uploads/2015/12/sortBySubject.gif)
Figure: The yellow items should be in the same group
And other ones along the same lines – these 3 should be together
![Figure: Screen capture from Outlook 2003 Beta 2](https://bettersoftwaresuggestions.com/wp-content/uploads/2015/12/Outlook_ConversationThreads.gif)
Figure: Screen capture from Outlook 2003 Beta 2
![Figure: Outlook won't thread the two messages together](https://bettersoftwaresuggestions.com/wp-content/uploads/2015/12/Outlook1.jpg)
Figure: Outlook won’t thread the two messages together