Today there are two main settings for your email notification subscriptions.
1. Subscribe to all new posts, all comments, all answers
You can do it in your subscription settings in the Content Types. Click on My Account, go to Subscriptions and click on Content types tab:
In this case, you'll get only one notification for every new article or question posted on DC and every answer and comment if you checked this option.
Here are some recipes with this option.
1. Receive all the new posts notifications (without answers and comments in it):
Turn on Post checkbox.
2. Receive all the new posts, answers and comments notifications (literally to get everything)