Rated 5 out of 5 stars

Very useful, is it possible to update it to latest thunderbird version 78.5.0?

Rated 5 out of 5 stars

Great idea! Is it technically an answer (related ID to the original mail) or a completely "new" mail, which is created using all the addresses?

It is a completely new email - no reference to old 'email trees'.
So it starts a new thread.