Sacrificial E-mail Account 

An expendable e-mail account which is established for registrational purposes, so as to catch all relative junk mail, keeping the user's primary e-mail account unaffected.

"I just registered with www.girlswithbadbreath.com, but I was smart this time and used my sacrificial e-mail account address - so I won't get all the trash mail (or evidence) in my work e-mail."

Sacrificial E-mail Account by swt1124 March 10, 2009

sacrificial e-mail account 

An email account, other than a person’s primary e-mail, that a person creates for posting controversial information so then employers, or anyone else, don’t find out about the stuff they post online

Person 1: dude why tf would you post that? You do know that employers trace that shit
Person 2: don’t worry I used my sacrificial e-mail account
Person 1: oh thank god

sacrificial e-mail account by Dubiks May 31, 2019