validate sender email

lib/submitters/validate_sending.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module Submitters
+  module ValidateSending
+    InvalidEmail = Class.new(StandardError)
+
+    module_function
+
+    def call(submitter, _mail)
+      raise InvalidEmail unless submitter.email.to_s.include?('@')
+
+      true
+    end
+  end
+end