Create a mailer in Rails 4

Hello party people and polar bears! You were probably wondering how it is you send email using Ruby on Rails. Here's how you create an automated email system that sends a confirmation email to each new user that registers to your app:

Setup a simple Ruby 2 on Rails 4 environment with Vagrant and Virtual Box

Since a developer time is most valuable when dealing with actual ... development tasks, setting up the environment for a new project better take less or no time, so that the developer can focus on building the actual product rather than focusing on setting up things.