Is it possible to merge inbox and sent folders in Mail? I'm considering migrating to OS X and I have a question on configuring its Mail application. In my current setup, I use Thunderbird configured to keep all sent and received messages from all my POP3 accounts in a single inbox folder, so I can follow my conversations in a nice thread, without having to jump from inbox to sent back and forth. I hope I've described it clearly, if not - I am going for something like this:



Would I be able to configure Apple Mail like this? I know I can just install Thunderbird for Mac and copy profile, but I would rather stick to default application if it's possible.
The layout is a bit different than in Thunderbird, but you can get threaded conversations by checking "Include related messages" in the Preferences panel:


The result will be something like this:



By choosing to "Use classic layout" you can get drop-downs for a thread, but it will only show messages from others, not from yourself. Your replies are shown in the preview pane on the bottom, though.



Edit: I just noticed this myself, but you can also click on the double arrows in the not-Classic view to show individual messages from others.