$ sudo apt-get update
$ sudo apt-get install libmail-sender-perl 

libmail-sender-perl is installed in your system.

Make ensure the libmail-sender-perl package were installed using the commands given below,

$ sudo dpkg-query -l | grep libmail-sender-perl *

You will get with libmail-sender-perl package name, version, architecture and description in a table

libmail-sender-perl package basic information: