Mail is not getting delivered

[Death_Kitty]

Plenty of guards are available, but no mail gets delivered, and my mail rooms are getting backed up. I think it might be connected to guards being interrupted by prisoner fights, and just never finishing delivering mail. The satchels are abandoned all over the prison.

 

[Furmanbp]

I have got this same issue. In Job tab you can see tens of queued "deliver mail" jobs and guard being rotating through all of them all time but does not actually do any of them.

 

[AlaudaArvensis]

I have the same problem after the 11.21 update, it is not fixed at all.