I tried running overdue_notices.pl with the --verbose argument, and got a bunch of messages like this: The following terms were not matched and replaced: div class="adress_odue" div class="adressrad" /div ... But the generated messages in the message_queue looks ok. The message comes from this code, around line 766 of misc/cronjobs/overdue_notices.pl: my @misses = grep { /./ } map { /^([^>]*)[>]+/; ( $1 || '' ); } split /\</, $letter->{'content'}; if (@misses) { $verbose and warn "The following terms were not matched and replaced: \n\t" . join "\n\t", @misses; } I have a hunch this is meant to look for things like <<something>> that are still left in the $letter->{'content'}, but it actually finds and reports on things like <something>, including HTML tags. So maybe it can be improved to look for <<>>? Maybe there should even be two different checks like this, one for HTML messages and one for non-HTML-messages?