EverWash and T-Mobile partnered up for an exclusive promotion that attracted 465,090 T-Mobile subscribers to EverWash’s partner washes in just 24 hours. T-Mobile Tuesdays is a weekly app built to thank T-Mobile customers with free items and good deals every Tuesday.

“We helped many of our wash partners boost their total membership count by 50%-250% in the first two days of the promotion,” said EverWash CEO John Cassady.

EverWash combines membership sales, subscription management, mobile app and analytics technology, training, sales and marketing support for washes nationwide. “Our mission is to help washes attract, gain, and keep more members,” Cassady said.

In addition to T-Mobile, EverWash has partnered with several employee benefits and perks providers that can grow memberships for wash partners.

“Whether a car wash already has a successful membership program or an underperforming one, or is simply looking to gain new customers, our unique channel partner consumer marketing approach takes our car wash partners’ membership growth to new heights,” Cassady said.

EverWash has been ranked on the a16z Marketplace 100 two years in a row, showing EverWash as the fourth-fastest growing marketplace company in the U.S. in 2020, and jumping 21 places in 2021.