extsmail software package provides enables the robust sending of e-mail to external commands, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install extsmail
extsmail is installed in your system.
Make ensure the extsmail package were installed using the commands given below,
$ sudo dpkg-query -l | grep extsmail *
You will get with extsmail package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | |
| Package | extsmail |
| Version | 2.0-2 |
| Description | enables the robust sending of e-mail to external commands |
| Sub Section |