exmh software package provides extensible X user interface for MH mail, 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 exmh
exmh is installed in your system.
Make ensure the exmh package were installed using the commands given below,
$ sudo dpkg-query -l | grep exmh *
You will get with exmh package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | |
| Package | exmh |
| Version | 1:2.8.0-5 |
| Description | extensible X user interface for MH mail |
| Sub Section |