Start Your Reply on Top in Mozilla Thunderbird To make Mozilla Thunderbird position the cursor on top, above quoted text when you reply: Select Tools | Account Settings... from the menu. Go to the Composition & Addressing category under the desired email accounts. Make sure Automatically quote the original message when replying is checked under Composition . Now choose start my reply above the quote next to Then, . For lazy top-post quoting , you may also want to choose below my reply (above the quote) following and place my signature . Click OK .