Thanks, but this doesn't answer my question.

I also use Firefox. I get the message summary via email. This doesn't contain images. If the message text implies that there are images, I click on the header, which displays the Yahoo group message in Firefox. If the displayed message contains thumbnails, I click on them to see the image, but if the mage is in line, I can't see it. With TDU, the work around is to find the message in the TDU archive, which does display the image, but that doesn't work for other Yahoo groups (e.g. Eutotrams) where there is no equivalent to the archive.

So my question is, how do I persuade Yahoo to show me the image?

David Walker