This new forum does not send individual or digest emails out to members like the old Yahoo Group did. Instead you can subscribe to topics or entire forums to receive an email with a link to the topic when a new post is made. Note that you must register for an account to be able to subscribe to forums and topics. Registration is quick and easy; and your information is not disclosed to anyone online unless you specifically include it in your profile settings.
Once registered, you will see a "Subscribe Forum" link (or a subscribe topic link) in the bottom blue bar of any forum or topic that you are browsing. Clicking this link will automatically subscribe you to the forum or topic you are in. You will also notice the link will change to "Unsubscribe Forum" (or topic) once you have subscribed. Clicking this link will then unsubscribe you from the forum or topic.
But there is another way to turn off any subscriptions you may have set up; and that is via your User Control Panel. You will see a link for this in the light blue bar at the top of the forum window. This link allows you access to a variety of account settings to customize your account.
To delete any subscriptions, click the "Manage Subscriptions" item from the "Overview" tab. Then simply click on the checkboxes in the "MARK" column for the subscriptions you wish to turn off and click the "Unwatch marked" button. That is all there is to it.