My sincere, profuse, embarrassed apologies!
I incorrectly gave the address for Mailwasher in a previous post. It is
www[dot]mailwasher[dot]net
(Remove the [dot] and replace with a dot. I know it's a website, but you can't be too careful!)
(I know this post is OT, but the apparent sheer scale of the problem probably makes it OT.)
Sorry again for the mistake!