Here's the steps. I've been using for sometime and know some gold sellers use this when they buy your frozen accounts. It works and allows you to check characters and play for 10 days. Make sure the account has been inactive for 90days atleast. You can check on the account management page.
Also you can send the Scroll to ANY email address and still be able to activate the account you wish to.
1. Goto your Management page either Europe or US
2.Login with a Active account. And proceed to Scroll of Ressurrection page, choose to send to email of the account you want to 10day play, Put a email address you have control of and click send with any name.
3.Restart your internet browser after logging off the active account.
4.Go to your inbox of the above email and click to accept.
5.Now log on and it should ask you to confirm to activate for 10days playtime. If it doesn't let you it might be not 90days inactive or there are traces of prev accounts.
You will have to send multiple scrolls for additional accounts but they can be sent to the same email address.
Have fun checking your frozen (scam) accounts as this method is easier than checking all the servers on the Transfer pages :P, remember to strip the gold off or transfer good toons if you got enough info. Good Luck
Here is the Template if you wanna know: (only if you don't access email inbox for the link)
US: worldofwarcraft.com/account/resurrect-a-friend-target.html?key=INSERTKEYHERE
EU: wow-europe.com/sor/resurrect-a-friend-target.html?key=INSERTKEYHERE
You can keep track of the keys on the Active accounts Scroll management page as the Thread by Issacobra states and can be used if you don't wanna check your email.