Stop Cron and Anacron job 'cron.daily' Family of emails

The standard solution to the cron daemon sending emails to root is:

• For each cron job in crontab (accessed via "crontab -e"), redirect standard output and standard error to a file or to null, for example:
  0 5 * * 1 tar -zcf /var/backups/home.tgz /home >/dev/null 2>&1
• Add the following to crontab before the cron jobs list:
  MAILTO=""

However, this still leaves Anacron to send emails with subject lines like "Anacron job 'cron.daily' on node foobar" every day, week and month. To get around this, edit /etc/anacrontab using your usual favorite editor and add MAILTO="" before the Anacron jobs list.

Here is an actual complete /etc/anacrontab:

# /etc/anacrontab: configuration file for anacron

# See anacron(8) and anacrontab(5) for details.

SHELL=/bin/sh

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

HOME=/root

LOGNAME=root

MAILTO=""

# These replace cron's entries

1       5       cron.daily      run-parts --report /etc/cron.daily

7       10      cron.weekly     run-parts --report /etc/cron.weekly

@monthly        15      cron.monthly    run-parts --report /etc/cron.monthly

This works on Ubuntu 14 and Ubuntu 17, and should work on all Anacron-enabled Unix and Linux systems.