Mutt labeling

Hi,
I'm trying out some new tactics on how to remember what reviews I
already addressed, which still need some attention. I found a script
that allows to modify the X-Label email header field and add some custom
labels that can then be displayed inside mutt:
https://blitiri.com.ar/p/other/mutt-labels/

The solution is mildly buggy (it launches the script twice for me for
some reason but I can just ignore the second call) and I was wondering
if someone found a labeling solution anywhere or came up with their own?

-- 
Kind regards
Maciej Wieczór-Retman

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