Hi @LJane , You will have to follow two things in order to get query parameters encrypted for each profile, in such a way that it generates personalized preference center url when a user clicks. I see that you want to get email & country data for each of the profile to be encrypted. 1. First thing you will have to encrypt the email & country using the "encryption_aescbcEncrypt" function available by adding them as additional data on workflow query activity. Refer this page for list of functions:...