Grab the RSS feed or follow my socials.
RSS (really simple syndication) is an open format that enable users to get the latest updates to a website, without disclosing personal information.
It's a shame that most browsers can only understand HTML, but not RSS, even though both are widely used open standards.
Anyway, you can subscribe to a website by adding it's RSS feed to your RSS reader/News app. The app will periodically scan RSS feeds and notify you when a wesbite publishes new content.
RSS feeds + RSS reader app allows you to subscribe to multiple websites without disclosing your email address or a other personal info. Some RSS reader apps also run a sync service for a truly cross-platform experience.
RSS reader apps:
Feeder for Android users.
NetNewsWire for Apple users.
Fluent Reader for desktop users.
Sync solutions:
Miniflux is a self-hosted RSS server.
Feedbin is a pay-to-use hosted sync service.