Carl,
We are on 3.8.1 on HP-UX. Here is what I came up with. This attaches a unix text file, adds .txt to it to the file name, and a windows email client will see that it has a text mime type. Attachement filename below would be in.12345.txt.
#list of addresses to send the message to
set emaillist “scott@st-claire.org cloveradmin@st-claire.org”
#body of the email message
set msg “This is the text in the body of the message”
#file to be attached to the email
set filename “in.12345”
set tmpfile “/tmp/$filename”
#unix commands to use
set ux2dos “/usr/bin/ux2dos”
set uuencode “/usr/bin/uuencode”
set mailx “/usr/bin/mailx”
exec $ux2dos $tmpfile | $uuencode $filename.txt | $mailx -ms “This is the subject linen$msg” $emaillist
#optional – remove the original file
exec rm $tmpfile
HTH,
Scott