libkmbox4 software package provides library for handling mbox mailboxes, 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 libkmbox4
libkmbox4 is installed in your system.
Make ensure the libkmbox4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libkmbox4 *
You will get with libkmbox4 package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Libraries |
| Package | libkmbox4 |
| Version | 4:4.14.10-1ubuntu2 |
| Description | library for handling mbox mailboxes |
| Sub Section | Libs |