Discover its sending out emails worth an offer to add authorized users to your card to earn a $25 bonus. But you need to spend $3,000 as well.
Get $25 Cashback Bonus after you add an Authorized User and spend $3,000 in combined purchases by September 30, 2019.
Get $25 Cashback Bonus® after you add an Authorized User and spend an additional $3,000 in combined purchases by September 30, 2019. Only purchases made after the Authorized User is added will count towards the $3,000 spend threshold. Offer is limited to one Authorized User Cashback Bonus promotion per account. Once promotion details are met, cash back will be credited to your account within three billing cycles.
If you were going to put $3K spend on your card then you can take advantage of this bonus as well. But a $25 bonus for spending $3K is not that great. Plus the offer is probably targeted.