Vital CRM
Customer A is inside the customer's list, but why can't I add Customer A to receive Marketing Email?
Because there is no email address in Customer A's information.
To send marketing emails, the customer information must have an email address, so that the system can retrieve the information to send emails. Before sending marketing emails, please check whether the email address has been added to the customer's information.
https://faq.vitalyun.com/EN/CRM#4137