Unified Inbox?

I have two email account added, anyway to get a unified inbox? I have the ‘All Inboxes’ smart folder, but that is also showing sent messages.

What you are seeing is a result of conversations. A conversation shows all related messages, both received and sent. 

If you do not want to use the conversation mode, you can disable it in Menu > View > Conversations. Have a look at the three options, and see which works best for you.