How do I add a mobi file to my Kindle?

Here are instructions from blogkindle.com:

You can copy documents in supported formate to your Kindle following these easy steps:

  1. Connect your Kindle to your computer via USB cable. After drivers are installed, you can see your Kindle device as a disk drive
  2. Navigate to “documents” folder on your Kindle device
  3. Copy your files in supported format there (PDF/TXT/MOBI/PRC/AZW)
  4. Safely eject the device

Your documents should now be visible along with your other eBooks in the home screen.

Read more: here!