I'm the administrator on a mailing list for a small project on Source Forge. The software used is GNU mailman. Whenever someone sends a mail to the list, it's shown as a new topic. I'd like to find a way to make several mails go into one topic.
I've tried using reply and repy to all in GMail and Outlook 2010 and I've tried to remove Re: from the start of the subject line, but nothing seems to work.