Rated 4 out of 5 stars

To clarify, at least one way in which the headers are being mangled is: Message-ID keeps getting squashed to 'undefined' when it was defined prior to the change.

This review is for a previous version of the add-on (2.1.0). 

Rated 4 out of 5 stars

Great Add-on, I've been using it for years. Thanks!

One bug I ran across recently is that this appears to mangle the headers (delete more than it should) when a Subject runs multiline, as they do sometimes like this:

Subject: an extra long subject that continues on
this next line

if the author could put a fix in to handle these types, that'd be great!

This review is for a previous version of the add-on (2.1.0).