I think I have setup my Thunderbird email client to receive PGP encrypted email, but is it supposed to receive emails?

I received a PGP encrypted email on a marketplace. The problem is that its encrypted and its impossible to read it without decrypting it.

Was I supposed to get that mail in my Thunderbird inbox or do I use a different technique with what I were emailed on the market?

So I don't need to setup Escrow manually? It says on the Silk Road; NEVER go around Escrow and pay the seller directly. How do I use Escrow? That guide did not give me a good answer on Escrow.

Hello, I want to buy something with BitCoins on The Silk Road, it is 100% legal so relax.

How do I make this as safe as possible? Can anyone explain how I use Escrow for The Silk Road? Thanks.

Hello. I just paid two people with my 100% genuine PayPal adress after a bitmarket.eu trade, but I only received from one of them. The other one sent a copy of a mail I have never sent and he claimed I sent this fake PayPal mail, have I been subject to a fraud? Is he not willing to give me my BitCoins? What do I do?