Hello guys When there is an image in an email, which is not encoded but just added as an embedded hyperlink, if I allow the email to display the images, then thunderbird does a GET request to get the images. Typically, on windows, it uses the default user_agent as the following, for example, on Windows 10: "Mozilla\/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko\/20100101 Thunderbird\/68.1.2 Lightning\/68.1.2" Is there an easy way to change this on my Thunderbird installation on Windows?? Thanks