From an Email:
“In case you missed the memo, a Week of Perks is here! Avoid a case of the Mondays with a FREE SANDWICH with the purchase of any sandwich all day today, August 6th only.
To redeem this offer, place your order, including any two sandwiches in your cart, pay with your Potbelly Perks account, and the equal or lesser-prices sandwich will be automatically deducted from your total.
Perks, Love & Potbelly”