In order to create mobipocket-files with eBookBinder the Terminal Tool kindlegen by Amazon is required. Setting up the kindlegen-tool in eBookBinder is easy to accomplish via the Preferences in eBookbinder under the point Mobipocket by following the step-by-step instructions.
After setting up the kindlegen tool, additional options are available under the bind book button, with which either an ePub file as usual or a mobipocket file and both an ePub and a mobipocket file can be created.
Note: The required kindlegen tool is supplied by Amazon as part of the Kindle Previewer app, which takes up a total of around 980MB on the hard drive. If you want to save hard drive space and the Kindle Previewer app is not needed, it is possible to extract the kindlegen tool, which alone only takes up around 23MB, from the app. For this purpose, the item Show package contents must be selected in the Finder via the right-click menu. The kindlgen tool can be found quickly using the Finder search. After copying the tool into the Applications-Folder, the Kindle Previewer app can be deleted.