Install ruby-rubymail by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-rubymail
Description:
MIME mail parsing and generation library
RMail is a lightweight mail library containing various utility classes and modules that allow ruby scripts to parse, modify, and generate MIME mail messages.
Homepage: https://github.com/terceiro/rmail
Version: 1.1.3-1
Section: universe/ruby