I got around this by creating a user.js file (see https://developer.mozilla.org/en/Thunderbird/Thunderbird_Configuration_Files#user.js) and putting in the following text:
// Modify quote header // user_pref("mailnews.reply_header_ondate", "\nOn %s");
I tried using the Config Editor to change the mailnews.reply_header_ondate but it wouldn't take the \n as a newline.
I got around this by creating a user.js file (see https:/ /developer. mozilla. org/en/ Thunderbird/ Thunderbird_ Configuration_ Files#user. js) and putting in the following text:
// Modify quote header // "mailnews. reply_header_ ondate" , "\nOn %s");
user_pref(
I tried using the Config Editor to change the mailnews. reply_header_ ondate but it wouldn't take the \n as a newline.