diff --git a/app/controllers/inquiries_controller.rb b/app/controllers/inquiries_controller.rb
index ceac6676435..6cc0da406fc 100644
--- a/app/controllers/inquiries_controller.rb
+++ b/app/controllers/inquiries_controller.rb
@@ -10,9 +10,10 @@ def new
 
   def create
     @inquiry = Inquiry.new(inquiry_params)
-
     result = valid_recaptcha?('inquiry')
+
     if result && @inquiry.save
+      notify_inquiry
       InquiryMailer.incoming(@inquiry).deliver_later
       redirect_to new_inquiry_url, notice: 'お問い合わせを送信しました。'
     else
@@ -26,4 +27,12 @@ def create
   def inquiry_params
     params.require(:inquiry).permit(:name, :email, :body, :privacy_policy)
   end
+
+  def notify_inquiry
+    sender = User.find_by(login_name: 'pjord')
+
+    User.admins.each do |receiver|
+      ActivityDelivery.with(inquiry: @inquiry, receiver:, sender:).notify(:came_inquiry)
+    end
+  end
 end
diff --git a/app/models/notification.rb b/app/models/notification.rb
index 3a6e2eaedbd..b991079e30a 100644
--- a/app/models/notification.rb
+++ b/app/models/notification.rb
@@ -39,7 +39,8 @@ class Notification < ApplicationRecord
     signed_up: 20,
     regular_event_updated: 21,
     no_correct_answer: 22,
-    comebacked: 23
+    comebacked: 23,
+    came_inquiry: 24
   }
 
   scope :unreads, -> { where(read: false) }
@@ -58,30 +59,6 @@ class Notification < ApplicationRecord
   after_update NotificationCallbacks.new
   after_destroy NotificationCallbacks.new
 
-  class << self
-    def checked(check)
-      Notification.create!(
-        kind: kinds[:checked],
-        user: check.receiver,
-        sender: check.sender,
-        link: Rails.application.routes.url_helpers.polymorphic_path(check.checkable),
-        message: "#{check.sender.login_name}さんが#{check.checkable.title}を確認しました。",
-        read: false
-      )
-    end
-
-    def came_answer(answer)
-      Notification.create!(
-        kind: kinds[:answered],
-        user: answer.receiver,
-        sender: answer.sender,
-        link: Rails.application.routes.url_helpers.polymorphic_path(answer.question),
-        message: "#{answer.user.login_name}さんから回答がありました。",
-        read: false
-      )
-    end
-  end
-
   def unread?
     !read
   end
diff --git a/app/notifiers/activity_notifier.rb b/app/notifiers/activity_notifier.rb
index 10acaa518e7..4314a7216f6 100644
--- a/app/notifiers/activity_notifier.rb
+++ b/app/notifiers/activity_notifier.rb
@@ -367,4 +367,20 @@ def moved_up_event_waiting_user(params = {})
       read: false
     )
   end
+
+  def came_inquiry(params = {})
+    params.merge!(@params)
+    inquiry = params[:inquiry]
+    sender = params[:sender]
+    receiver = params[:receiver]
+
+    notification(
+      body: "#{inquiry.name}さんから問い合わせがありました。",
+      kind: :came_inquiry,
+      receiver:,
+      sender:,
+      link: Rails.application.routes.url_helpers.admin_inquiry_path(inquiry),
+      read: false
+    )
+  end
 end
diff --git a/db/fixtures/discord_profiles.yml b/db/fixtures/discord_profiles.yml
index 0197813a856..de9bb8ca35c 100644
--- a/db/fixtures/discord_profiles.yml
+++ b/db/fixtures/discord_profiles.yml
@@ -264,3 +264,8 @@ discord_profile_nagai-kyuukai:
   user: nagai-kyuukai
   account_name:
   times_url:
+
+discord_profile_pjord:
+  user: pjord
+  account_name:
+  times_url:
diff --git a/db/fixtures/files/users/avatars/pjord.jpg b/db/fixtures/files/users/avatars/pjord.jpg
new file mode 100644
index 00000000000..7ecce2f41ff
Binary files /dev/null and b/db/fixtures/files/users/avatars/pjord.jpg differ
diff --git a/db/fixtures/users.yml b/db/fixtures/users.yml
index 073a04284fa..97141c4142f 100644
--- a/db/fixtures/users.yml
+++ b/db/fixtures/users.yml
@@ -1251,3 +1251,21 @@ nagai-kyuukai:
   created_at: "2014-01-01 00:00:13"
   sent_student_followup_message: true
   last_activity_at: "2014-01-01 00:00:04"
+
+pjord:
+  login_name: pjord
+  email: pjord@fjord.jp
+  crypted_password: $2a$10$n/xv4/1luueN6plzm2OyDezWlZFyGHjQEf4hwAW1r3k.lCm0frPK. # testtest
+  salt: zW3kQ9ubsxQQtzzzs4ap
+  name: ピヨルド
+  name_kana: ピヨルド
+  company: company1
+  description: "管理者のピヨルドです。バイキングの末裔です。"
+  course: course1
+  job: office_worker
+  os: 回答なし
+  admin: true
+  adviser: true
+  updated_at: "2014-01-01 00:00:01"
+  created_at: "2014-01-01 00:00:01"
+  last_activity_at: "2014-01-01 00:00:01"
diff --git a/test/fixtures/users.yml b/test/fixtures/users.yml
index 2d7092ff104..60921d25238 100644
--- a/test/fixtures/users.yml
+++ b/test/fixtures/users.yml
@@ -930,3 +930,21 @@ marumarushain<%= i %>: # ページネーション確認のためのユーザー
   last_activity_at: "2014-01-01 00:00:0<%= 2 + (i - 1) / 2 %>"
   sent_student_followup_message: true
 <% end %>
+
+pjord:
+  login_name: pjord
+  email: pjord@fjord.jp
+  crypted_password: $2a$10$n/xv4/1luueN6plzm2OyDezWlZFyGHjQEf4hwAW1r3k.lCm0frPK. # testtest
+  salt: zW3kQ9ubsxQQtzzzs4ap
+  name: ピヨルド
+  name_kana: ピヨルド
+  company: company1
+  description: "管理者のピヨルドです。バイキングの末裔です。"
+  course: course1
+  job: office_worker
+  os: 回答なし
+  admin: true
+  adviser: true
+  updated_at: "2014-01-01 00:00:01"
+  created_at: "2014-01-01 00:00:01"
+  last_activity_at: "2014-01-01 00:00:01"
diff --git a/test/notifiers/activity_notifier_test.rb b/test/notifiers/activity_notifier_test.rb
index 7359a9cc983..0ac85271876 100644
--- a/test/notifiers/activity_notifier_test.rb
+++ b/test/notifiers/activity_notifier_test.rb
@@ -156,4 +156,21 @@ class ActivityNotifierTest < ActiveSupport::TestCase
       notification.notify_later
     end
   end
+
+  test '#came_inquiry' do
+    params = {
+      inquiry: Inquiry.first,
+      sender: users(:pjord),
+      receiver: users(:komagata)
+    }
+    notification = ActivityNotifier.with(params).came_inquiry
+
+    assert_difference -> { AbstractNotifier::Testing::Driver.deliveries.count }, 1 do
+      notification.notify_now
+    end
+
+    assert_difference -> { AbstractNotifier::Testing::Driver.enqueued_deliveries.count }, 1 do
+      notification.notify_later
+    end
+  end
 end