You need a spam test e-mail address so that you can run a spam filter test before sending your campaign e-mails.

The test enables you to determine how the main spam filters used by today’s business and private users will handle your campaign e-mails. You can then use the results of the test to optimize your delivery rates by troubleshooting any spam related problem that might prevent your e-mails from reaching their destinations.

The spam filter test e-mail address is generated specifically for your account and is not to be used by anyone else. Make sure that this address doesn’t end up with an unauthorized third party.