Due to how BEE Free stores images, the ZIP file you receive upon export will include two folders. The first folder will include the HTML document, and the second will include your images. The HTML file will refer to the local file path for the images stored inside the ZIP folder.
<img src="images/help.png" alt="" data-embeded="auto" style="vertical-align: top; width: 112px;" width="112">
As you can see, the code looks for the "help.png" image in the local "images" folder. Before sending this message, you may need to host these images elsewhere on the web. Once the images are hosted online, you can change the image paths within the HTML. As an alternative, some email sending platforms have a ZIP import option that will host the images for you.
If you are using external URLs to insert your images, please refer to How to use external images in your message for more information.
If you are looking for an email design solution that includes image hosting, check out BEE Pro. Image hosting is included in the base price of all plans.