[Mailman-Users] Mail merge?

I'd like to use Mailman in a commercial setting, including collecting user names along with e-mail addresses, and doing a mail merge, inserting their names into the messages. Is this possible with Mailman? Thanks in advance. -- Mailman-Use

[Mailman-Users] No date header on outgoing mail

I've just set up Mailman on a Linux box using Qmail as the MTA, but am running into a problem with the date header on Mailman-generated mail (subscribe info, etc.). Mailman does not add a date header, and qmail does not add a date header on mail received via SMTP - only sendmail. This causes