How do I view / edit items I have added to my Blacklist?
Without having more information only thing to say is in the same place as you set them.
Presumably you mean the web shield, site blocking.
If so:
AvastUI > Settings > Active Protection > Web Shield - Customize > Site Blocking.
No, I want to view the Blacklist for email received with Microsoft Outlook through the Avast plug-in mail shield.
There is no blacklist in the mail shield.
In Outlook I have the Avast Antispam plugin installed. When I receive an unwanted email I click the Blacklist button and the email address is stored somewhere. I’ve looked in Outlook and it is not stored in the Standard Outlook list. I have the standard Outlook filtering disabled. So, the Avast anti spam filter stores this data somewhere. I would like to know where and how to access it. Clearly, for my investigation, it is handled by Avast.
Found it. Go to Settings / Active Protection / Customize Anti-Span / Blacklist.
I wish there were sort options on the list.