R u talking about Mistral Air in Italy.
If your answer is yes, this is what i can say about it.
It's owned by the Poste Italiane (Italian Postal service).
They are using 737-3 quick change. During the night they fly the mail around italy, during the day they fly charter.
Last december they were looking for qualified 737 pilots, but right now i don't know if they are still looking for any. If u r looking for more info post your question in the italian speeking forum. There they will be happy to answer your questions. Italian pilots like to talk a lot
Best regards
HPF