How to mass update the newsletter status of customers in Prestashop.
It could happen. You import your customers into Prestashop and their subscription status to the newsletter gets lost. You may simply want to set them as subscribed but you don’t want to do it one by one. You want to set all the customers in bulk below or above a certain customer ID as subscribed to your prestashop newsletter in one go.
This is a quick post on how to update the newsletter status of customers in Prestashop using PHPmydamin.
from Andrew Brett Watson.com