Download a MOBI file on iOS or Android
It can be tricky downloading a MOBI file to your iOS/Android device so we would recommend downloading an eReader that allows you to read MOBI files (for example the FBReader app).
After you have done this, you can click to download the file from either the email or the download link.
You'll then be taken to the download page.
You should now be able to open your file using your eBook reader (e.g. FBReader). To do this, open your eBook reader and go to your library.
After you have found the file, you should be able to open it without any trouble and start reading it.