libkmime4 software package provides library for handling MIME data, 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 libkmime4
libkmime4 is installed in your system.
Make ensure the libkmime4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libkmime4 *
You will get with libkmime4 package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Libraries |
| Package | libkmime4 |
| Version | 4:4.14.10-1ubuntu2 |
| Description | library for handling MIME data |
| Sub Section | Libs |