def build_mail
      AwsSesNewsletters::MailBuilder.new(
          from: newsletter.from,
          subject: newsletter.subject,
          html_body: newsletter.html_body,
          images: get_images,
      ).build
    end
def build_mail
      AwsSesNewsletters::MailBuilder.new(
          from: newsletter.from,
          subject: newsletter.subject,
          html_body: newsletter.html_body,
          images: get_images,
      ).build
    end
Builds a Mail