mailsubj - send a mail message with a subject line
mailsubj subject recip ...
mailsubj inserts subject and the list of recips into a
mail message:
Subject: subject
To: recip ...
body
mailsubj reads the body of the message from its standard
input. Then it sends the message.
Note that subject and recip must be quoted properly for
the message header.
addresses(5), qmail-header(8), qmail-inject(8)