Navigate to the Digest portal at the top right of your dashboard screen and select your desired Digest (on the left). Click the gear icon to the right of the Digest name and select Delete. You will asked to confirm the action as any and all settings will be erased once the Digest is deleted. As an alternative, you can select ‘Archive’ which will pause delivery of the digest, but will retain all settings in case you would like to reactivate it in the future.