root@lists1001:/var/lib/mailman/archives/private# du -hs *.mbox | sort -hr | head -n 20
6.5G	reading-web-team.mbox
3.1G	wmfall.mbox
2.5G	arbcom-l.mbox
1.8G	wmfsf.mbox
1.3G	wikidata-bugs.mbox
1.1G	wikinews-pl.mbox
1.1G	wikimedia-in-exec.mbox
890M	ops.mbox
782M	wikimedia-il.mbox
741M	wikimediail-board.mbox
618M	affcom.mbox
597M	blog-admin.mbox
582M	traffic-anomaly-report.mbox
581M	movecom.mbox
563M	wmfcc-l.mbox
552M	reading-wmf.mbox
539M	analytics-internal.mbox
519M	functionaries-en.mbox
492M	qa-alerts.mbox
453M	wikimedia-l.mbox