I received mail from the US, Germany, and Russia. A postcard and letters; the postcard  and a letter is from Postcrossing and the other letters are from my pen pals.

From the USA:

A letter from one of my prison pen pals

From Germany:

A letter from one of my regular pen pals

From Russia:

A letter from postcrossing

Front of the postcard from postcrossing

Back of the postcard from postcrossing