You can just drag and drop logos, maps and images into your email and ticket templates.  

 Please note, you must tailor the size of the image before adding it (cannot be adjusted within TicketingHub.

 If your image is too large you can resize it before adding it to TicketingHub by following these steps (images included)

To reduce image size, use the program Preview => Tools =>  Adjust Size. 

Once you make the image smaller it works fine (see PDF Attached).