How to send emails from command line on Linux?

1. Make sure you have set up the Mail Transport Agent, e.g. exim4 or postfix
2. Install mailutils, which contains commandmail:

   sudo apt-get install mailutils
   

3. send email using mail command:

   echo "this is a test mail." | mail -s "test" -c john@myorg1.org -b tom@myorg2.org terry@myorg.org 
   

   -b: [BCC] -c: [CC] -s: [subject]

see also

about mail command