heirloom-mailx software package provides feature-rich BSD mail(1) -- transitional package, 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 heirloom-mailx
heirloom-mailx is installed in your system.
Make ensure the heirloom-mailx package were installed using the commands given below,
$ sudo dpkg-query -l | grep heirloom-mailx *
You will get with heirloom-mailx package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | |
| Package | heirloom-mailx |
| Version | 14.8.6-1 |
| Description | feature-rich BSD mail(1) -- transitional package |
| Sub Section |