# File lib/email_spec/matchers.rb, line 46
      def initialize(expected_email_addresses_or_objects_that_respond_to_email)
        emails = expected_email_addresses_or_objects_that_respond_to_email.map do |email_or_object|
          email_or_object.kind_of?(String) ? email_or_object : email_or_object.email
        end

        @expected_recipients = Mail::ToField.new(emails).addrs.map(&:to_s).sort
      end