This seems to work for existing accounts only. I have tried this on a newly created account and it did not work. Can only be used once per account.
Not sure if this is targeted as well but I can confirm that I was able to use it on an account that did not receive the email.
*Edit
Seems to be targeted but might still work even if you didn't receive the email.
To redeem this offer, simply:
- Log in to your Woolworths NZ online account
- Add $100 or more worth of groceries to your trolley
- Enter promo code WELCOMEBACK1 at checkout
- Save $20
Correct me if I’m wrong but i believe this is targeted