欢迎访问 Thunderbird 附加组件。
Useful, if your mails are presorted e.g. on an IMAP-Server, and you want answers to a mail be saved along with the original mail.
For version 3.x under Thunderbird 78 please check my website for some hints!
For all people who would like to have another default folder, please consider changing your behavior: First select the desired folder in the folderpane, then create the new mail.
Please use latest version from the homepage (http://www.ggbs.de/extensions/CopySent2Current.html)