I'd like to propose to build API functionality to fetch info about and manage the lists of article followers.
For example:
  • GET /articleId endpoint to fetch list of email addresses following an article
  • POST /articleId and/or PUT /articleId endpoints to add new emails to the list of followers
This is somewhat related to one of the analytics request (https://feedback.document360.com/feature-request/p/analytics-for-the-follow-an-article-feature), bc I agree with what's written there:
"I am sure this data is already available in the platform as notifications are sent to users who follow the article. It is just a matter of extracting that data and sharing it."
I'm also adding my vote to the requests asking for the options to:
Article follow option has great potential as a customer facing functionality. Let's materialise this potential!