I currently use this message to send e-mails in a script but I would also like to save the output of this code to a file as well while preserving the variables. What's the easiest way to accomplish this?

when=/bin/date
/usr/sbin/sendmail -t >2 <<-EOM
Subject:User access disabled.
From:testuser@test.com
To:$EMAIL
User $USERNAME has been disabled.

Regards,
$variable Support.
EOM

If you want to save the actual email, see the tee command, or just send it to a post box that has a mail filter that refiles it as needed.