Seems like a generic offer as long as you have a citibank credit card. A banner will be displayed in your citibank app when you select a credit card account.
Citi payall is yet another BNPL service for bill but interestingly supports standard bank transfer. Which might come in handy in certain scenarios.
2% fees apply so when making $1500 payment, assuming bill CC surcharge is circa 1.3% its about $50-$10.5 profit. Citi reward points on top of it.
did you receive a targeted email or see it after you log in? last time i logged in it still had the dec banner on the website.