For today, you probably don’t want to get email every time someone (in all three sections) posts a comment. So, to turn this feature off:
- Log in to WordPress.
- Go to Dashboard > Settings (near the bottom) > Discussion.
- Scroll down to “Email me whenever.”
- Unclick “anyone posts a comment.”
- Save those changes.
You may still choose to follow any given post, in which case I think you will get emails for comments on that specific post.
And you do want to get email for new posts (like this one, from me). So make sure not to turn off email for new posts.