SALESmanago currently gives a possibility for sending dynamic Web Push notifications with two scenarios- last viewed products and products left in cart. You can send them massively or with the usage of automation processes (recommended way). Important thing: dynamic web push notifications can be sent only to monitored contacts with the consent for receiving web push notifications.

You can find more informations here: https://support.salesmanago.com/web-push-notification-wizard/
https://support.salesmanago.com/action-send-web-push-notification/

https://support.salesmanago.com/workflow-action-send-web-push-notification/