Just one.
what the price to mail letter to
how many forever stamps = .94
5
No, the postman will ignore it. Go get stamps.
typicaly 2 stamps
maybe 2 0r 3 stamps
Stamps show that you have paid the money to have the letter delivered.
No, you must use US postage stamps.
depends how heavy the letter is
Yes.
It is proof that youpaid to mail the letter
Your answer depends on the size and weight of the letter you want to mail. You can use the online calculator, below, from the USPS, to determine the value in stamps required to mail your letter.