diff --git a/spec/mailers/shared/notify.rb b/spec/mailers/shared/notify.rb
index 3956d05060b1e320408574fb6126a48cd633c5d4..49867aa5cc4dbdd0512d9b1d77c10928ee6d6d7e 100644
--- a/spec/mailers/shared/notify.rb
+++ b/spec/mailers/shared/notify.rb
@@ -7,7 +7,7 @@ shared_context 'gitlab email notification' do
   let(:new_user_address) { 'newguy@example.com' }
 
   before do
-    ActionMailer::Base.deliveries.clear
+    reset_delivered_emails!
     email = recipient.emails.create(email: "notifications@example.com")
     recipient.update_attribute(:notification_email, email.email)
     stub_incoming_email_setting(enabled: true, address: "reply+%{key}@#{Gitlab.config.gitlab.host}")
diff --git a/spec/models/project_services/pipeline_email_service_spec.rb b/spec/models/project_services/pipeline_email_service_spec.rb
index 68a96b9251f38c0766ed6004d3b7924e85868c07..e2d8eaf6a1f46d403fa16ffa21f5d00d195e6f55 100644
--- a/spec/models/project_services/pipeline_email_service_spec.rb
+++ b/spec/models/project_services/pipeline_email_service_spec.rb
@@ -13,7 +13,7 @@ describe PipelinesEmailService do
   end
 
   before do
-    ActionMailer::Base.deliveries.clear
+    reset_delivered_emails!
   end
 
   describe 'Validations' do
diff --git a/spec/services/notification_service_spec.rb b/spec/services/notification_service_spec.rb
index 699b9925b4e571bf8590dfe4f0b491ac731baec6..84c22631c67804e86d95f1e07453a5c19eeedc66 100644
--- a/spec/services/notification_service_spec.rb
+++ b/spec/services/notification_service_spec.rb
@@ -17,7 +17,7 @@ describe NotificationService, services: true do
 
     it 'sends no emails when no new mentions are present' do
       send_notifications
-      expect(ActionMailer::Base.deliveries).to be_empty
+      should_email_no_one
     end
 
     it 'emails new mentions with a watch level higher than participant' do
@@ -27,7 +27,7 @@ describe NotificationService, services: true do
 
     it 'does not email new mentions with a watch level equal to or less than participant' do
       send_notifications(@u_participating, @u_mentioned)
-      expect(ActionMailer::Base.deliveries).to be_empty
+      should_email_no_one
     end
   end
 
@@ -79,7 +79,7 @@ describe NotificationService, services: true do
           # Ensure create SentNotification by noteable = issue 6 times, not noteable = note
           expect(SentNotification).to receive(:record).with(issue, any_args).exactly(8).times
 
-          ActionMailer::Base.deliveries.clear
+          reset_delivered_emails!
 
           notification.new_note(note)
 
@@ -111,7 +111,7 @@ describe NotificationService, services: true do
         context 'participating' do
           context 'by note' do
             before do
-              ActionMailer::Base.deliveries.clear
+              reset_delivered_emails!
               note.author = @u_lazy_participant
               note.save
               notification.new_note(note)
@@ -134,7 +134,7 @@ describe NotificationService, services: true do
           @u_watcher.notification_settings_for(note.project).participating!
           @u_watcher.notification_settings_for(note.project.group).global!
           update_custom_notification(:new_note, @u_custom_global)
-          ActionMailer::Base.deliveries.clear
+          reset_delivered_emails!
         end
 
         it do
@@ -173,7 +173,7 @@ describe NotificationService, services: true do
 
         expect(SentNotification).to receive(:record).with(confidential_issue, any_args).exactly(4).times
 
-        ActionMailer::Base.deliveries.clear
+        reset_delivered_emails!
 
         notification.new_note(note)
 
@@ -196,7 +196,7 @@ describe NotificationService, services: true do
       before do
         build_team(note.project)
         note.project.team << [note.author, :master]
-        ActionMailer::Base.deliveries.clear
+        reset_delivered_emails!
       end
 
       describe '#new_note' do
@@ -238,7 +238,7 @@ describe NotificationService, services: true do
       before do
         build_team(note.project)
         note.project.team << [note.author, :master]
-        ActionMailer::Base.deliveries.clear
+        reset_delivered_emails!
       end
 
       describe '#new_note' do
@@ -273,7 +273,7 @@ describe NotificationService, services: true do
 
       before do
         build_team(note.project)
-        ActionMailer::Base.deliveries.clear
+        reset_delivered_emails!
         allow_any_instance_of(Commit).to receive(:author).and_return(@u_committer)
         update_custom_notification(:new_note, @u_guest_custom, project)
         update_custom_notification(:new_note, @u_custom_global)
@@ -348,7 +348,7 @@ describe NotificationService, services: true do
     before do
       build_team(issue.project)
       add_users_with_subscription(issue.project, issue)
-      ActionMailer::Base.deliveries.clear
+      reset_delivered_emails!
       update_custom_notification(:new_issue, @u_guest_custom, project)
       update_custom_notification(:new_issue, @u_custom_global)
     end
@@ -408,7 +408,7 @@ describe NotificationService, services: true do
           label.toggle_subscription(guest)
           label.toggle_subscription(admin)
 
-          ActionMailer::Base.deliveries.clear
+          reset_delivered_emails!
 
           notification.new_issue(confidential_issue, @u_disabled)
 
@@ -604,7 +604,7 @@ describe NotificationService, services: true do
           label_2.toggle_subscription(guest)
           label_2.toggle_subscription(admin)
 
-          ActionMailer::Base.deliveries.clear
+          reset_delivered_emails!
 
           notification.relabeled_issue(confidential_issue, [label_2], @u_disabled)
 
@@ -733,7 +733,7 @@ describe NotificationService, services: true do
       add_users_with_subscription(merge_request.target_project, merge_request)
       update_custom_notification(:new_merge_request, @u_guest_custom, project)
       update_custom_notification(:new_merge_request, @u_custom_global)
-      ActionMailer::Base.deliveries.clear
+      reset_delivered_emails!
     end
 
     describe '#new_merge_request' do
@@ -1111,7 +1111,7 @@ describe NotificationService, services: true do
 
     before do
       build_team(project)
-      ActionMailer::Base.deliveries.clear
+      reset_delivered_emails!
     end
 
     describe '#project_was_moved' do
diff --git a/spec/workers/build_email_worker_spec.rb b/spec/workers/build_email_worker_spec.rb
index 788b92c1b84e6e36a71e3416fb21797706713297..a1aa336361a3166fbb9424146b185086e897d757 100644
--- a/spec/workers/build_email_worker_spec.rb
+++ b/spec/workers/build_email_worker_spec.rb
@@ -24,7 +24,7 @@ describe BuildEmailWorker do
     end
 
     it "gracefully handles an input SMTP error" do
-      ActionMailer::Base.deliveries.clear
+      reset_delivered_emails!
       allow(Notify).to receive(:build_success_email).and_raise(Net::SMTPFatalError)
 
       subject.perform(build.id, [user.email], data.stringify_keys)
diff --git a/spec/workers/emails_on_push_worker_spec.rb b/spec/workers/emails_on_push_worker_spec.rb
index 036d037f3f99fd8ea574c584a6deefca56335b1a..fc652f6f4c36cb4180eb6ce69e4e837bbb24fc30 100644
--- a/spec/workers/emails_on_push_worker_spec.rb
+++ b/spec/workers/emails_on_push_worker_spec.rb
@@ -87,7 +87,7 @@ describe EmailsOnPushWorker do
 
     context "when there is an SMTP error" do
       before do
-        ActionMailer::Base.deliveries.clear
+        reset_delivered_emails!
         allow(Notify).to receive(:repository_push_email).and_raise(Net::SMTPFatalError)
         allow(subject).to receive_message_chain(:logger, :info)
         perform
@@ -112,7 +112,7 @@ describe EmailsOnPushWorker do
           original.call(Mail.new(mail.encoded))
         end
 
-        ActionMailer::Base.deliveries.clear
+        reset_delivered_emails!
       end
 
       it "sends the mail to each of the recipients" do