snippet to read your gmail emails by label

read_gmail_messages_by_label.rb

require 'gmail'
require 'dotenv'
Dotenv.load

label_name = "" # label name here

Gmail.new(ENV["GMAIL_USERNAME"], ENV["GMAIL_PASSWORD"]) do |gmail|
  
  mail_with_label = gmail.label(label_name)
  
  count = mail_with_label.count
  puts "Number of email for the label #{label_name}: #{count}"
  
  first_email = mail_with_label.emails.first
  puts "first_email: #{first_email.class}"  
  puts "first_email: #{first_email.send(:message).text_part}"
  
end