How to get mail statatic from postfix mail log ( Per-Day postfix Traffic Summary )

Download pflogsumm

•  wget http://jimsun.linxnet.com/downloads/pflogsumm-1.1.1.tar.gz
•  tar -zxf pflogsumm-1.1.1.tar.gz
• cd pflogsumm-1.1.1

Generate the statistics  :-
#  cat /var/log/maillog | ./pflogsumm.pl

 Grand Totals
------------
messages

   8596   received
   8606   delivered
      0   forwarded
      0   deferred
      0   bounced
      0   rejected (0%)
      0   reject warnings
      0   held
      0   discarded (0%)

  77044k  bytes received
  77324k  bytes delivered
      7   senders
      2   sending hosts/domains
     13   recipients
      4   recipient hosts/domains


Per-Day Traffic Summary
    date          received  delivered   deferred    bounced     rejected
    --------------------------------------------------------------------
    Mar 24 2018         3          3
    Mar 25 2018       215        208
    Mar 26 2018       302        298
    Mar 27 2018       289        307
    Mar 28 2018      7787       7790