Replace Post by A New Post in Wordpress

I am posting content in wordpress by email posting service. So is there any way to replace a post by a new email post if the title of the both page are equal.
Assuming there was a post in my blog like: "Lovely Birds Photo"
Now, if i again do a email post in my wp blog with this same title "Lovely Bird Photo" then first post should be replaced by second post. So, same titled post will be replace by the newer one, Any idea?

 

I don't think that's possible with standard Wordpress.