It seems funny to have a "policy," but I've received enough emails at this point that I may as well lay it out. How do I feel about e-books? If you have written a book that is only available electronically, will I read it?
The answer is... maybe.
1. I now own a Kindle Fire, so I can better read e-books. Because of that .mobi files are now okay, in addition to .PDF and .doc files. However...
2. I'm still not that good at reading e-books. I don't know if it's the chronic fatigue-related brain fog, or some other way that I am wired, but I have trouble reading text-dense items on a screen. The Kindle is more manageable than the laptop screen was, however. That does not mean I don't want to read your book -- No, I'm just slow about it. For that reason, my Feedly is often creaking with the weight of unread items. Usually, I wait until I'm better able to concentrate, or I catch up while I'm folding laundry or something. Otherwise, lines blur together and I don't hold onto the information as well. That's unfair to your book.
So if you email me and say, "Hey, I've published this e-book. Will you review it?" more often than not, I'm going to decline. If your book sounds really interesting to me and something I'd love, sure, I'll make the effort. But if it's a matter of, "I might like this," I'm less likely to devote the time than I would if a printed review copy were available.
I don't have [much] prejudice against self-published works -- If your request is professional, then I will treat you as such -- but I prefer a physical book. That way, I can give your book a better read, and therefore, a more through and honest review. Your book deserves that, right?
Still, I understand that when you're in the business of publishing yourself, sometimes you don't have the cash for a printed edition. Believe me, I get it. So, it does not hurt to ask me anyway. If you've followed my reviews and feel like your book would be a good fit, say so.
The only thing I ask, when it comes to e-book reviews, is that you be patient. Stalk my "currently reading" status on GoodReads, if you want, but know that my turnaround time is not so swift.
If you have a physical book to send me, I'd rather you did that. And I thank you for even offering. Seriously, it's awesome. You wrote a book! I just want to treat it fairly.
I hope that clears things up a bit. Thanks for reading (and writing).