mailman.rb

require 'mailman'
Mailman.config.imap = {
  server: 'imap.gmail.com',
  port: 993, # you usually don't need to set this, but it's there if you need to
  ssl: true,
  # Use starttls instead of ssl (do not specify both)
  #starttls: true,
  username: 'umar@treeni.com',
  password: 'fresh786'
}
Mailman::Application.run do
  default do
    begin
    p "Found a new message"
    p message.from.first # message.from is an array
    p message.to.first # message.to is an array again..
    p message.subject
    p message.attachments.first.filename
    rescue Exception => e
      Mailman.logger.error "Exception occurred while receiving message:n#{message}"
      Mailman.logger.error [e, *e.backtrace].join("n")
    end
  end
end

tmail.attachments.each do |tattch|
  fn = tattch.filename
  begin
    File.open( fn, "w+b", 0644 ) { |f| f.write tattch.body.decoded }
  rescue Exception => e
    logger.error "Unable to save data for #{fn} because #{e.message}"
  end
end