What file(s) contain my sent messages for Mail?

[m i k e]

I had a problem with Mail so ended up just deleting my ~/Library/Mail folder as well as ~/Library/Preferences/com.apple.mail.plist and replacing them with a backup I had made relatively recently. I am connected via POP3 so the remaining messages that I had received since the backup were downloaded from the mail server. However, I don't have my most recent sent messages. I'm assuming if I replace the current Sent Messages.mbox file with the one that is still in my Trash Can I should have my most recent sent messages back. Is there anything else I need to do or any other files I need to replace to make this happen. Thanks.