Sign up for subscriptions in the Help Center to receive notification emails when an article is updated or when a new article is added to a category. 

Email notifications are sent every day at 9:00am CST.

Select Subscribe at the top of a category (a landing page for a collection of articles).

Enter your Email Address , check the I'm not a robot box, and choose Subscribe.

The Manage Subscriptions page will display with a confirmation of your subscription and a list of all categories to which you are currently subscribed. Select Unsubscribe for certain categories or Unsubscribe All to no longer receive subscription notifications.

Additionally, emails received will contain a linked here that will open the Manage Subscriptions page to unsubscribe later if needed.