Just got an email from CitiBank
Earn a one-time $10 statement credit after you make a purchase of $10 or more with Citi Pay Masterpass between 7/20/17 and 9/20/17 *
*You will receive a one-time $10 statement credit after you make a purchase of $10 or more using Citi Pay Masterpass or the Citi Pay app for Android™ with your eligible Citi credit card. Your purchase must be made and post to your account between 7/20/17 and 9/20/17. Items returned for credit do not qualify for this offer. The statement credit will be applied to your account within 2 billing cycles after the eligible purchase is posted. To qualify for this offer, your account must be open, current and in good standing when the statement credit is applied. If you convert to another Citi product, you may no longer be eligible for this offer. Offer is non-transferable and only available for the account noted in this email.