Probably because it's a unique code and people check their own email. I did not TD btw.
Also, you didn't post an expiration date.
I did td, this isn't a deal, it's someone posting that they got a unique 1 time use coupon in their email that no one else can duplicate unless they also got 1 in their email, which they'd have already known by checking their own email. why post this, it's like posting "I found a $5 bill on the sidewalk, everyone go look on the ground for money, ymmv". or maybe I've just had too much coffee.