What does CoD stand for?

Also, I get what the idea of a CoD is, but how to you send/set one for a certain person?

((Does this question even make sense??))

CoD stands for cash on delivery I think. So it means you make the payment when you receive the item.

To send a CoD to someone, you select a cheap tradeable item, usually a fairy mushroom, and click the small envelope icon underneath the inventory tab. There will be a pop-up, where you input the username you're sending the item to, if they're your friend, the name should be in the dropdown list. Then you input the amount they have to pay. So when they receive the item in their trades, they'll click accept to receive the item, and the gold will be added to your account.

If you are sending items directly, you can do it this way. If you are sending items for free, follow the same steps, but leave the CoD as 0.

Thank you so much! I get how to use the CoD exactly now!
I can't express in words how helpful you are!
Thank you!

You're welcome ^^