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