moderated reply/forward headers in Thunderbird


since TB updated to 68, the Reply With Headers extension stopped
working. now when I reply or forward, the headers are formatted as the
default header. is there a way to modify the default header or leave the
default and add a custom one, and if so, what are the steps to do so?

instead of using an extension, I prefer to create a custom header
leaving the default untouched, thus merely switching to which I want to use.

Join to automatically receive all group messages.