Monitoring incoming content on Kindle

Hi, so I've been a happy LibrarianSync user as I use it to sync my books folder with kindle through custom collection rebuild from folders.
Now I'm after a new endeavour, namely in automatic assignment of articles which come by Amazon mail (I often mail articles from the my laptop browser directly to my Kindle) to a specific folder.

I think I have a rough idea how to do it but I couldn't notice any new process spawning with incoming content by using 'ps -aux' command...
So my question would be - has someone identified the process which handles the content delivery on kindle? What should I monitor? Perhaps someone already wrote a content delivery monitor?

Thanks!