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-= Send emails using the command line for fun and profit!
-
-:ssmtp: https://wiki.archlinux.org/index.php/SSMTP
-:mailutils: https://mailutils.org/
-
-Here are a few reasons why:
-
-. send yourself and other people notification of cronjobs, scripts runs, CI
-  jobs, _etc._
-. leverage the POSIX pipe `|`, and pipe emails away!
-. because you can.
-
-Reason 3 is the fun part, reasons 1 and 2 are the profit part.
-
-First {ssmpt}[install and configure SSMTP] for using, say, Gmail as the email
-server:
-
-[source,sh]
-----
-# file /etc/ssmtp/ssmtp.conf
-FromLineOverride=YES
-MailHub=smtp.gmail.com:587
-UseSTARTTLS=YES
-UseTLS=YES
-rewriteDomain=gmail.com
-root=username@gmail.com
-AuthUser=username
-AuthPass=password
-----
-
-Now install {mailutils}[GNU Mailutils] (`sudo apt-get install mailutils` or the
-equivalent on your OS), and send yourself your first email:
-
-[source,sh]
-----
-echo body | mail -aFrom:email@example.com email@example.com -s subject
-----
-
-And that's about it, you've got mail.  Here are some more places where it might
-be applicable:
-
-[source,sh]
-----
-# report a backup cronjob, attaching logs
-set -e
-
-finish() {
-  status=$?
-  if [[ $status = 0 ]]; then
-    STATUS="SUCCESS (status $status)"
-  else
-    STATUS="FAILURE (status $status)"
-  fi
-
-  mail user@example.com                                 \
-       -s "Backup job report on $(hostname): ${STATUS}" \
-       --content-type 'text/plain; charset=utf-8'       \
-       -A"$LOG_FILE" <<< 'The log report is in the attachment.'
-}
-trap finish EXIT
-
-do-long-backup-cmd-here
-----
-
-[source,sh]
-----
-# share the output of a cmd with someone
-some-program | mail someone@example.com -s "The weird logs that I was talking about"
-----
-
-...and so on.
-
-You may consider adding a `alias mail='mail -aFrom:email@example.com'` so you
-don't keep re-entering the ``From:'' part.
-
-Send yourself some emails to see it working!