One of my favorite features back when I used Outlook was the option to save sent emails in the same folder as the message being replied to. For example, if I had moved a message to folder A and was replying to that, my reply was saved in A, not Sent. (If I replied to a message in my Inbox, my reply went to the default Sent folder.)
This made it really easy to see an entire thread when I came back to it later. This workflow is a huge time-saver for me and is the only thing I miss from Outlook. Right now, I manually move sent messages to the folder with related messages which is tedious. Is there a way to recreate this feature from Outlook with Mac Mail? (I'm using Mac Mail 6.2 on OSX 10.8.2).