Guards To Work In Mail Room

[kazpl23]

Is it possible for guards to work in a mail room? A youtuber has done this, and I'm using a prison where prisoners will not be able to work in the mail room.

[SuperDave]

I have no idea really, but maybe put as staff only.

[OldGamer]

You can but its a bit funky and never gets done.

You set it as staff only and put some guards as stationed in the room.

[qcs2017]

It is not funky and it works fine. In fact, guards seem to get the job done faster than prisoners. But they are also cheaper.
Also, you don't have to set it staff only and you don't have to station guards.

The only thing to do is: Do NOT assign prisoners to work in the mailroom. As soon as you unassign all prisoner labour from the mailroom, the guards get their mail sorting jobs and follow them immediately.

You CAN set it staff only, that does not matter (I can currently not recall if mail room contains contraband like scissors - if so, it MAY matter in a different way - but it shouldn't since the letters are not opened there).
You CAN station guards, that does not matter (except that you may waste expensive guard working time, but the guards may be a tad faster at their desks once the mail bags arrive by the means of other guards).

Regarding "never gets done" with prisoners - usually for me, mail gets done well by prisoners within a typical 3 hour work session if you have about one desk and one prisoner per mail bag plus one or two for the handling. If you have two 3 hour work sessions a day, half the desks and prisoners suffice.