Turning on email tagging by default makes avast ad-ware not freeware. Avast got at least a month worth of advertising because I couldn't find out how to turn it off. That's sleazy business and if avast doesn't go back to it turned off by default, I will raise the alarm and seek to have avast reclassified.
As someone who provides Tech Support at microsoft.com, I have long recommended avast to someone needing new or replacement antivirus software. Our rules require that any 3rd party software we recommend must be completely freeware, and so if avast antivirus doesn't revert to making any and all tagging readily viewable and easily changed preferences, I will be forced to drop avast from my list of recommended software