Email field on the article

Hi,

With the free version of the plugin, is it possible to add an email field to the article of your choice ? (Not all of them).

The goal is that by default, subscribers don’t receive notification emails when an article is modified. It’s up to them to take the initiative to subscribe via a “your email address” field at the bottom of the articles to receive emails.

Is this possible with the free version or with an add-on ? (Link to the add-on if needed)