It’s more for awareness so you know who leaked your info 

wow, thanks. just tested with my gmail and it worked. but what to do with such single-use emails? report to the police everyone who sold/leaked my email address? I doubt they care.

SwapMarket

Good call 

I add periods … to Gmail address 

Bell_curve

You can also do this with most(?) email providers by appending a 

. Some apps probably don’t allow this, but many do

security

AT&T says criminals stole records of 'nearly all' customers in new data breach

StillStackinAfterAllTheseYears

You can also do this with most(?) email providers by appending a `+name` like `freetx+att@gmail.com`. Some apps probably don’t allow this, but many do 