I would like to see SquirrelMail include the basic headers information from the original message when sending reply messages (as is already done with forwarded messages). This would automatically insert information from the original message (sender, recient[s], date, time, subject), into the reply like this:
--- ORIGINAL MESSAGE ---
Subject: Email Subject
From: "Sender" <firstname.lastname@example.org>
Date: Fri, April 11, 2008
To: "Recipient" <email@example.com>
At present, SquirrelMail shows only the name of the person who sent the original message, without the additional information. That can lead to uncertainty/confusion for recipients of the reply message.
The auto-insertion of header information is helpful for recipients of forwarded messages, and it would be helpful for recipients of reply messages as well -- esp. where there are multiple recipients, but even in those cases where the reply recipient was the source of the original message.