In-App & Web Notifications are increasingly being used by digital-first businesses as a means for boosting conversions or simply conveying an important message to their visitors (while they are active in-app or on the website). According to Localytics, In-App Messaging in particular is capable of boosting engagement by 3x! So to what can we attribute the success of in-app and web notifications? Easy. That would be their exceptional ability to deliver the right content to the right audience at the right time.
https://mopinion.com/10-tools-with-in-app-web-notifications/