diff --git a/app/models/ask_category_setting.rb b/app/models/ask_category_setting.rb
index 6ac6fd5..2f08f5a 100644
--- a/app/models/ask_category_setting.rb
+++ b/app/models/ask_category_setting.rb
@@ -41,4 +41,7 @@ class AskCategorySetting
   field :usage_rule
   field :category_id
   field :title_layout, type: Integer
+  field :email_regex_enable, type: Boolean, default: false
+  field :email_regex, type: String, default: '\A[^@\s]+@([^@.\s]+\.)+[^@.\s]+\z'
+  
 end
diff --git a/app/models/ask_setting.rb b/app/models/ask_setting.rb
index 3747fd3..a750e66 100644
--- a/app/models/ask_setting.rb
+++ b/app/models/ask_setting.rb
@@ -19,6 +19,11 @@ class AskSetting
       self.save
     end
   end
+  after_save do
+    if self.email_regex_enable_changed? || self.email_regex_changed?
+      AskCategorySetting.all.update_all(email_regex_enable: self.email_regex_enable,email_regex: self.email_regex)
+    end
+  end
   def custom_fields
     tmp = super
     tmp.select{|k,v| v['delete'] != true}
diff --git a/lib/ask/engine.rb b/lib/ask/engine.rb
index d2024c9..ff8c898 100644
--- a/lib/ask/engine.rb
+++ b/lib/ask/engine.rb
@@ -26,15 +26,20 @@ module Ask
       end
       begin
         require File.expand_path('../../../app/models/ask_setting', __FILE__)
+        require File.expand_path('../../../app/models/ask_category_setting', __FILE__)
         require File.expand_path('../../../app/models/ask_setting_index', __FILE__)
         if defined?(AskSetting)
-          if AskSetting.first.nil?
-            AskSetting.create()
+          ask_setting = AskSetting.first
+          if ask_setting.nil?
+            ask_setting = AskSetting.create()
           elsif AskSetting.count > 1
-            AskSetting.all[1..-1].each do |ask_setting|
-              ask_setting.destroy
+            AskSetting.all[1..-1].each do |a|
+              a.destroy
             end
           end
+          if ask_setting.email_regex_enable
+            AskCategorySetting.all.update_all(email_regex_enable: ask_setting.email_regex_enable,email_regex: ask_setting.email_regex)
+          end
         end
         if defined?(AskSettingIndex)
           if AskSettingIndex.first.nil?