Great product and very simple to use. I have never used a verifier so this was my first experience with one. I have a lot of emails to verify so I purchased a few codes. The steps to verify were very intuitive so I didn't even have to read any documentation or how-to's.
I will probably be purchasings a couple more codes to out the benefits.
What sold me on Reoon was the great value they're passing on to the AppSumo community. I'll max out purchased codes, but when I need to purchase more credits down the road, they've been gracious enough to offer additional credits at a generous discount.