This app will have to be compliant with the DPA and GDPR so I’ll need to look into how to comply with those first.
Honestly though, I do wonder if I could get away with
putting up a favicon that updates whenever there’s a new
post to read on my blog.
Then I wouldn’t need a person’s email address… but they’d have to bookmark my site which seems a bit of an ask.
I reckon most people would prefer some kind of notification, either via email or otherwise.
Another thought I had was sending notifications via Web Notifications that would appear on reader’s phones/desktops. That way, no one has to provide their email. Clicking the notification will open the new blog post, and the blog list will still indicate which blogs have been read on the device the user is currently using.