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Amazon has placed a cap of 50mb file size for Mobi formats we are allowed to send to the Kindle account. If the file size exceeds that, the option to do so from our site does not appear. You can still get the file to your Kindle, however. To do, simply download the mobi file to your PC or Mac and connect your Kindle device to it via the USB cable. Then, open up the "Documents" folder of the Kindle device and place the .Mobi file there to transfer it to your Kindle. We're sorry for any inconvenience these extra steps may cause you.
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