Salesforce offers an easy way to notify a user, such as a record owner, team members, etc. We do not need to write a single line of code to build this (if We prefer), remember the admin motto “click-not-code”).
The notification will appear in the Salesforce mobile app and Lightning experience (desktop web browser), but we can determine if we want the notification to appear in the Salesforce mobile app only or the Lightning experience only, or both environments.
Only a few steps an admin needs to build notification.
Create notification types to send custom notifications via a process in Process Builder, a flow in Flow Builder, Apex code, or the invocable action API. We can create multiple custom notifications from a notification type.
Send Custom Notification from Process Builder
In the Process Builder, from Action Type, select “Send Custom Notifications”
Then, we can define who will be notified
Activate the Process once completed.
Here is a sample of notification in Lightning experience for Opportunity owner.
For more Blogs : https://blog.merfantz.com/
Reference from : click here