How long does it take for University to receive mailed transcript?

After a 1000 phone calls and emails I finally got my school to give me my official transcript. It will be mailed out either tomorrow (Friday) or Monday. How long does it usually take for the school to receive it? How much longer after that to hear a decision considering everything else is in?

Don’t transcripts have to be sent directly from the HS to the college, to ensure integrity?

Snail mail delivery takes 1-3 days, depending on the distance to the destination.

Some schools will not send them directly. Ours will print them and put them in an envelope and seal it with official tape…but then you have to send them. You can also go to a central transcript center but the hours are not always accessible to students.