User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9.2) Gecko/20100115 Firefox/3.6 ( .NET CLR 3.5.30729) Build Identifier: Is it possible to implement to change the subject of messages? If often get e-mail which have meaningless subjects. To rename the subjects I drag and drop the message on my desktop and open it with a text editor. Then I change the subject (one of the header information). After saving I drag and drop it back in Thunderbird where it appears with another subject. Would it be possible to implement this as a normal feature where this procedure would be much easier with one click and a window which asks for another subject? Thank you. Reproducible: Always

Thanks, it is really a duplicate. I didn't find it because it's in "Mozilla News Core" and I searched in "Thunderbird".