According to GMail help: "At the moment, you can't set Gmail to display all images from any sender; you must do this on a per-contact basis."

Source: I can't see images in a message - Gmail Help

UPDATE APRIL 17, 2012: The feature of enabling images by sender now appears in Gmail!

Many thanks.

I can get the same email on Internet Explorer to show the image but can't on Firefox. However, in Firefox when I select "reply" the image shows up. I use gmail in both cases. But in both IE and Firefox I do not see the options to view images or not view images like I have seen in earlier versions of gmail. I currently use Firefox 11 and IE 9.

Hi bnet, that's odd because your Gmail settings should be applied in both browsers...

Are you using any add-ons that selectively block images, such as AdBlock Plus or similar?

If you right click an image in IE that doesn't display in Firefox, and choose Properties, does the image have a secure (HTTPS) URL, matching the secure (HTTPS) URL of Gmail itself? IE and Firefox might treat "mixed" (secure/not secure) content differently.

Edit: The Gmail setting to block or not block images is named "External Content". You can access it here:

Gear logo > Settings > General tab

Currently, your choices do not include "show everything" but only:

_ Always display external content (such as images) sent by trusted senders
_ Ask before displaying external content

I had the box checked in IE show all images and it seems to work ok in IE. But it still won't display in Firefox