Originally Posted by NullNix
More annoying is that Amazon, without asking, changes periodicals into personal documents if you email them to your Kindle, so you end up with two categories: periodicals from Amazon, which go into the archive folder and get expired, and periodicals from Calibre, which don't, so every old issue sits outside all collections cluttering things up until you delete them. Yes, that's right, Amazon silently edits your MOBIs in flight. Not very nice, really.
Interesting I didn't know that. One thing I really like about STK is the fact that you can either choose to archive your uploaded book or just to send it to your Kindle(s) or both. So you don't have to have a book archived if you don't want to nor do you have to have it loaded onto your Kindle by the program if you just want to put it in Archive.