Oh, wait, since you’ve looked, I’m a text now. Heard of quantum mechanics?

mail.rb

require 'mail'

msg = Mail.new { body 'Text' }
# => #<Mail::Message:70116771523620, Multipart: false, Headers: > 
msg.text?
# => false 
puts msg
# Date: Sun, 21 Dec 2014 01:29:26 -0500
# Message-ID: <549668c6e2caa_33e13fc554c65be84831f@Artems-MacBook-Pro.local.mail>
# Mime-Version: 1.0
# Content-Type: text/plain; charset=UTF-8
# Content-Transfer-Encoding: 7bit
# 
# Text
# => nil 
msg.text?
# => true