MintEmail.com gives you a four hour temporary email address

What Company Is Offering:
MintEmail.com gives you a four hour temporary email address. Your new temporary email address has been already saved to your clipboard (no need to press Ctrl+C). All incoming emails will be displayed on this page.

How It Works:

Their website robot will automatically verify the email address for most websites. This means you no longer have to click on the URL link to verify the email (This feature currently works for most but not all websites).
Simply visit the website mintemail.com and a random email address will be automatically generated and copied to your clipboard. There's no need to press Ctrl+C. You can then go ahead and paste the email wherever its desired.

Once your email is received the title bar will automatically be updated. You don't need to constantly refresh the page to check if your email has arrived.

More at:http://www.mintemail.com/