Is there some extension where I can mass add a list of domains to the banned email hosts list? I found a nice gist of disposable email providers, and people who use those typically don't return after they've either spammed the forum or made a drive by post with no intention of checking back for replies. I want to ban the whole lot in one go, instead of sitting there adding thousands of domains manually.
i use this: https://addons.elkarte.net/admin/Block-Disposable-Email.html
and it's effective.