#7 Extension of duplicate deletion

[Anonymous]

It would be good if the duplicate deletion would delete every
message if there were over a certain number of duplicates found.

I'm getting > 5000 spams per day, and filter a lot of these by eye
by collapsing by thread in my mail app. I'm seeing more than 10 (
sometimes upto 50) identical copies of each spam every day - so
the existance of a large number of duplicates is a sure way of me
identifying spam.

Perhaps something like

DEL_DUPE_LIMIT=10

To zap all copies of a dupe if 10 or more are seen.