claws-mail-pdf-viewer software package provides PDF and PostScript attachment viewer for Claws 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 claws-mail-pdf-viewer
claws-mail-pdf-viewer is installed in your system.
Make ensure the claws-mail-pdf-viewer package were installed using the commands given below,
$ sudo dpkg-query -l | grep claws-mail-pdf-viewer *
You will get with claws-mail-pdf-viewer package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | |
| Package | claws-mail-pdf-viewer |
| Version | 3.13.2-1ubuntu1 |
| Description | PDF and PostScript attachment viewer for Claws Mail |
| Sub Section |