How can I achieve the following:
I want to be able to notify the anonymous user by email when I update a node.
Example: I have `mysite.com/cool-page. I want to have a block with an email field so users can subscribe basically to that page. And every time I update the content from that page, I want the subscribed users to be notified by email.
With Rules I managed to set something up so every time my node is updated it will send an email to users of a role. The problem is that I want to send an email to a list from the database (that I previously collected in a subscription block).
I use Drupal 7.