Can you make the dlists hashes instead of arrays? Then you could check something like this: 

if (!grep {!exists $user_hash{$dlist_name}{$_}} @emails) {
   # flag 'all users'
}

[download]

That would have the advantage of deduping your dlists; where with an array you probably ought to check before pushing.

In reply to Re: Checking contents of array against contents of a hash by hbm
in thread Checking contents of array against contents of a hash by walkingthecow

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