Automatic Attachment Renaming?

SO, I have this “Free Stock Photos” site which I maintain via gmail through my iPhone. The plugin I’m using to accomplish this is Postie. I’m trying to make the site more SEO Friendly by being able to dynamically rename the attachment (the photo) to match the title of the entry.

Is there a plugin or a “hack” that can help me do this?

This is the site: https://www.MyFreeStockPictures.com