Hello, I had a problem with displaying an HTML-email in Outlook (Express) and Hotmail. Thunderbird displayed the mail correct. For other email-clients I don't know if it will be displayed correctly. The images in the clients were not loaded. After a few hours we noticed that hotlink protection caused to not dislay the images. The image-paths were all relative and we tried also absolute. The domain that hosts the images was added to the hotlinking domains. Solution: When I selected the option "Allow direct requests" the images were correctly displayed. But why is there a difference between Outlook and Thunderbird in the method for displaying images in email??