add this website's RSS feed to your reader app.
You probably know that websites use HTML and CSS to define how their website is displayed in browsers, but you might not know that most websites also serve an RSS formatted copy of their content. But, it's a shame that most browsers can't prase RSS even tho it's just an extended version of the widely used XML open standard format.
Anyway, there are RSS reader apps that let you subscribe to any website by adding their RSS feed URL. These apps periodically scan RSS feeds of all added websites and notify you when a wesbite publishes or updates content.
RSS feeds + RSS reader apps are great for privacy because they allow users to subscribe to multiple websites without disclosing their email address or phone number to anyone.
Most RSS reader apps are designed to used on a single device, but you can subscribe to a cloud based sync service for a cross-device experience. Some apps include a sync service for free.
RSS reader apps that I've had a good experience with:
Feeder on Android devices.
NetNewsWire on Apple devices.
Fluent Reader on desktops.
RSS sync services that worked well in my tests:
Miniflux is a self-hostable RSS server.
Feedbin is a hosted sync service.