When you have over a thousand blacklist entries, it's very time-consuming to manage. Two suggestions would make things much easier:

1. "Blacklist Consolidation" feature that finds 2 or more blacklist entries with the same, or similar, domains and suggests a wildcard to replace them. If wildcard (or edited version) is chosen, automatically delete the individual entries and add the new wildcard.

2. "Smart Wildcard" feature that allows you to enter a wildcard, (i.e., +@+.nz), and have the option to add the wildcard while removing every blacklist entry that matches the wildcard.

Much better suggestion is to set the blacklist expire time to a week or less if you use it. that avoids storing thousand of stolen or fake never to be used again addresses.

Best suggestion is to only use the blacklist for addresses that are known not to be forged.