Recent content by marcelb

  1. M

    Avoid Duplicate Email Contacts On All My Lists

    Hi, Let's say this email contact is in listID 1 [email protected] Then... I like to submit a new contact via the API to listID 2, same email, it will be added to the list but I like to block it as it's already in another contact list. So basically I like to avoid duplicate contacts (whatever...