+- spost(8) has been merged into post(8). Its functionality is enabled
+ by selecting the sendmail/pipe mail transport method, described in
+ the mh-tailor(5) man page. The spost -noalias, -backup/-nobackup,
+ -push/-nopush, and -remove/-noremove switches are not supported by
+ post. Note that spost did not support -whom or Dcc, and neither
+ does post when using sendmail/pipe. For backward compatibility,
+ spost has been replaced by a simple shell script that exec's
+ post -mts sendmail/pipe.