This tutorial features the Feast Plugin, which contains theme enhancements.
The Modern Menu integrates a "Subscribe" button that provides a call-to-action for readers to sign up for your newsletter the entire time they're on your site.
This allows you to:
- improve accessibility by removing forms that lack proper headings and form labels
- improve CLS by preventing forms from forcing the browser to re-render the page when it loads
- improve user experience by removing annoying pop overs
- provide a better user experience, giving them a subscribe button when they want to subscribe, not at an intrusive point in your content
See the rethinking the newsletter post for further details.
The subscribe button is hardcoded to point to a page with the slug "/subscribe". This page must be manually created like a normal page (title = "subscribe").
If you want to use a different URL or redirect to an off-site form (not recommended), you'll want to create a 301 redirect using Yoast.