Research and Development
In Mozilla’s Thunderbird email client, the default says that every email that has images from the web is going to have its images blocked, and you have to enable the remote content BY email address.
This can be really annoying. If you are pretty secure in your email manhood and don’t fear the web, you can disable this feature pretty easily:
Go to Tools -> Options -> Advanced and click the Config Editor button.
In the search box type: **mailnews.message_display.disable_remote_image** and it should show a setting in the box below that is set to **true**. Double click the word **true** to change it to **false**. Close the Config Editor.
Now you will always see remote images in emails.