Is this a scam?

[Jacktong]

I sold something in Gumtree (website). This guys reached me and needed me to send it to USA. I gave him my bank account and he used paypal E-transfer. This is my first time to receive money through paypal and I don't know it is a scam or not. It said the transfer is pending and I can not see in the summary until the verification is done. (which means I need to give the scanned receipt to them and they will verify with AU post office).

[kernowlass]

@Jacktong 

SCAM.

They encourage you to accept a direct Paypal payment and may ask you to send the item internationally.
No funds or activity of the transaction shows in your Paypal account and any emails may go into your junk/spam folders.

You will get/got a "fake" email that looks as though it is from paypal.....it isn't because they don't have a Paypal account and have no intention of paying you.
It will say the buyer has paid ...you won't have been paid.
They will tell you that the payment is released when you provide paypal with a tracking/shipping number......this won't happen.

Paypal NEVER tell you to send an item before the payment is showing in your paypal account.
Paypal do not tell you to send trackable, they advise it for selling protection but it is not compulsory.
Delete any emails and ignore the scammers.