kde-config-mailtransport software package provides mail transport service KCM, 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 kde-config-mailtransport
kde-config-mailtransport is installed in your system.
Make ensure the kde-config-mailtransport package were installed using the commands given below,
$ sudo dpkg-query -l | grep kde-config-mailtransport *
You will get with kde-config-mailtransport package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Libraries |
| Package | kde-config-mailtransport |
| Version | 15.12.3-0ubuntu1 |
| Description | mail transport service KCM |
| Sub Section | Libs |