[ih] Email behavior (better subject ID...)

[Kenneth Porter]

On 9/4/2021 11:51 AM, Jack Haverty via Internet-history wrote:
>
> I've never seen anything like "List-Unsubscribe" offered in a menu.   
> I guess Thunderbird doesn't do anything with those other List-* 
> fields.   Or perhaps there's some options somewhere in the Preferences 
> that changes the behavior or enables more commands. 

Perhaps we could upvote this bug:

https://bugzilla.mozilla.org/show_bug.cgi?id=1512453

(I'd suggest providing a patch, but I've found Thunderbird hard to 
build. I did try recently on Windows 10 and had much greater success, 
but it was still quite complicated.)