用 NotificationX, you can show eye-catching pop-ups to tell everyone when someone signs up for your newsletter through the ActiveCampaign subscription alert. This cool feature in NotificationX PRO lets you display alerts for new email subscribers from ActiveCampaign, which can boost your business by getting more people interested. ActiveCampaign is an all-in-one marketing platform that offers email marketing, marketing automation, sales automation, and CRM (customer relationship management) features.