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