We are indeed experiencing some major bumps in the transition to our new website, mainly around Discussion/email integration. Primarily, many people who had previously unsubscribed from emails were inadvertently given a subscription that delivers emails. Additionally, the "Daily" send interval that we thought would behave like the former website's "digest" option is not behaving as expected.
Please accept our apologies for these non-trivial hiccups. Rest assured that our development partners and IxDA stakeholders are working on providing the right fixes for these issues. We are also working hard to prepare a more appropriate forum for posting & addressing technical issues, so do stay tuned.
In the meantime, for those of you who want to turn off an unwelcome deluge, we recommend the following (either temporarily or permanently, as you wish). In your Member Profile (Members > My Profile, or click on your name in the header), go to Notifications > Subscriptions, and set the Status for each subscription to "Inactive". You can do this by individually selecting a notification item, clicking "edit" and then selecting the Status setting to "Inactive" or you can do this as a bulk operation from by selecting the checkboxes for notification items and using the "Update Options" drop-down menu & selecting the option "Deactivate".