Postfix usage

Sending Mail

Piping give you the most options

{
  echo From: noreply@domain.com
  echo To: you@gmail.com
  echo Subject: Foo Bar Baz
  echo
  echo This is my email.
  echo Hello friend!
} | sendmail -t

You can also use params

echo 'my body' | sendmail \
  -f noreply     `# ${user}@domain.com (rc.conf hostname, and .localdomain)` \
  -F 'No Reply'  `# sender name` \

View Config

postconf -n