SSL Certificates and Web Push Notifications
Web push notifications or Website push notifications work only via an HTTPS connection with the website. An HTTPS connection is possible only after a SSL certificate is installed for your website. Once the website loads via HTTPS, then web browser push notifications can be shown.
For using website push notifications you need to setup your own web app such that you can launch notifications based on certain rules or conditions. Alternately, signup with a well-known service such as PushEngage and use their built-in push marketing tools.
Currently, web push notifications are supported on most modern web browsers. Once setup you can reach your audience on their browser at a time of your choosing and send interest-based & personalised communications.
Use of Web Push notifications is a prerequisite to creating a Progressive Web App (PWA). Hence, enabling HTTPS is a must to create a PWA.