Very cool entry, the accumulation of stamp becomes stressful extremely quickly.
I feel like, of all the paper please clones I've played since the start of the jam, this is the one that come closest to the original ludo-narrative tone. Having to read and censor letters while juggling with bureaucratic incompetence is a very neat idea.
I've encountered a pretty nasty bug however, if the player forgets a letter on the mat before archiving it then every subsequent letter will give the penalty "forgot letter on the mat" and become impossible to open. This put an end to my first playthrough prematurely.