WhatsApp is set to allow companies message you. The app, which is owned by Facebook, says your number won't be made public.
It is looking at ways for businesses, like banks or airlines, to be able to contact users and effectively advertise their services.
It's the first time in four years that WhatsApp has updated its terms and privacy policy, and it admits it's looking "to test ways for people to communicate with businesses in the months ahead."
WhatsApp says it wants to "explore ways for you to communicate with businesses that matter to you too, while still giving you an experience without third-party banner ads and spam."
One of the changes being made to its privacy settings is that WhatsApp and Facebook (both the same company) are going to start sharing information about you, like your phone number.
It says that will let it track your behaviour so it can offer up adverts from companies you want to hear from. Sharing your number, WhatsApp says, will also offer better friend suggestions on Facebook.
As it prepare to test the feature in the next few months, WhatsApp says its belief in the value of private communications is "unshakable".
