Copy/paste content into email or word doesn't include images

That’s expected. If you copy the content then there is no image there, only reference to it. If you copy the rendered HTML, you may also only get the reference, depending on your mail client too (some could embed the image, others will just copy the reference). This is not specific to XWiki though. Would be the same for any HTML content from any site.

Note: If your wiki is private this is why you don’t see the images (the image requires authentication from the server to send it). What you want is to embed the image.

There is a known issue for this: Loading...

And export to PDF also works. Same for the HTML export. Export to LaTeX also includes the images in the export.

Thanks