diff --git a/scripts/send-supporter-emails-by-category.plx b/scripts/send-supporter-emails-by-category.plx
index f2d717c..d3868d5 100644
--- a/scripts/send-supporter-emails-by-category.plx
+++ b/scripts/send-supporter-emails-by-category.plx
@@ -173,7 +173,7 @@ foreach my $id (@supporterIds) {
     print $sendmailFH $thisLine;
   }
   close $sendmailFH;
-  usleep(60000);
+  usleep(50000);
   $groupCounts{$group}++;
 }
 print "\n\n";