Send e-mail with attachment in shell environment.

Tested(target) OSs :

• Ubuntu
• Arch Linux

Required packages :

• msmtp (simple mail client that can support external smtp like Gmail, Naver etc.)
• mutt (needs for file attachment)

1. Install package

• Ubuntu :

apt-get install -y msmtp mutt

• Arch Linux :

pacman -S msmtp mutt

 

2. Prepare shell environment

• create a "~/.msmtprc" file for msmtp

  cat << EOF > ~/.msmtprc
  # Set default values for all following accounts.
  defaults
  auth           on
  tls            on
  tls_trust_file /etc/ssl/certs/ca-certificates.crt
  logfile        ~/.msmtp.log
  
  # Naver
  account naver
  host smtp.naver.com
  port 465
  tls_starttls off
  from fromuser@naver.com
  user fromuser
  password password-for-fromuser
  
  # Set a default account
  account default: naver

• Create a rc file for mutt

cat << EOF > ~/.muttrc
set sendmail=/usr/bin/msmtp
set use_from=yes
set from=<e-mail address>
EOF

3. Send an e-mail with attachment

# Simple
echo -e "hello there username." | mutt -a file.zip -s "Test hello attachment" -- receiver-user-name@gmail.com

# HTML content
mutt -e "set content_type=text/html" receiver-user-name@gmail.com -a file.zip -s "Test hello attachment" < ~/emailbo
dy.html