class EmailRejectionMailer < BaseMailer def rejection(reason, original_raw, can_retry = false) @reason = reason @original_message = Mail::Message.new(original_raw) return unless @original_message.from headers = { to: @original_message.from, subject: "[Rejected] #{@original_message.subject}" } headers['Message-ID'] = SecureRandom.hex headers['In-Reply-To'] = @original_message.message_id headers['References'] = @original_message.message_id headers['Reply-To'] = @original_message.to.first if can_retry mail(headers) end end