diff --git a/maildir-zero b/maildir-zero
index 719a01c..97db7ee 100755
--- a/maildir-zero
+++ b/maildir-zero
@@ -37,6 +37,7 @@ def mailbox_name(maildir, root):
 
 ignore_zero = True
 ignore = [r'spam']
+sort_by_count = True
 
 
 root = os.path.expanduser('~/Maildir')
@@ -53,5 +54,12 @@ for maildir in maildirs(root):
 
     counts[name] = all_
 
-for name in sorted(counts.keys()):
-    print('{:30} {:5d}'.format(name, counts[name]))
+if sort_by_count:
+    key = lambda i: i[1]
+    reverse = True
+else:
+    key = lambda i: i[0]
+    reverse = False
+
+for name, count in sorted(counts.items(), key=key, reverse=reverse):
+    print('{:30} {:5d}'.format(name, count))