diff --git a/app/models/ticket.rb b/app/models/ticket.rb
index 3fbd1089b..61b45d33b 100644
--- a/app/models/ticket.rb
+++ b/app/models/ticket.rb
@@ -1479,20 +1479,8 @@ result
     recipients_checked = []
     recipients_raw.each do |recipient_email|
 
-      skip_user = false
       users = User.where(email: recipient_email)
-      users.each do |user|
-        next if user.preferences[:mail_delivery_failed] != true
-        next if !user.preferences[:mail_delivery_failed_data]
-
-        till_blocked = ((user.preferences[:mail_delivery_failed_data] - Time.zone.now - 60.days) / 60 / 60 / 24).round
-        next if till_blocked.positive?
-
-        logger.info "Send no trigger based notification to #{recipient_email} because email is marked as mail_delivery_failed for #{till_blocked} days"
-        skip_user = true
-        break
-      end
-      next if skip_user
+      next if users.any? { |user| !trigger_based_notification?(user) }
 
       # send notifications only to email addresses
       next if recipient_email.blank?
@@ -1510,7 +1498,7 @@ result
             next # no usable format found
           end
 
-          recipient_email = "#{$2}@#{$3}"
+          recipient_email = "#{$2}@#{$3}" # rubocop:disable Lint/OutOfRangeRegexpRef
         end
       end
 
@@ -1789,4 +1777,20 @@ result
       created_by_id: 1,
     )
   end
+
+  def trigger_based_notification?(user)
+    blocked_in_days = trigger_based_notification_blocked_in_days(user)
+    return true if blocked_in_days.zero?
+
+    logger.info "Send no trigger based notification to #{user.email} because email is marked as mail_delivery_failed for #{blocked_in_days} day(s)"
+    false
+  end
+
+  def trigger_based_notification_blocked_in_days(user)
+    return 0 if !user.preferences[:mail_delivery_failed]
+    return 0 if user.preferences[:mail_delivery_failed_data].blank?
+
+    # blocked for 60 full days
+    (user.preferences[:mail_delivery_failed_data].to_date - Time.zone.now.to_date).to_i + 61
+  end
 end
diff --git a/spec/models/ticket_spec.rb b/spec/models/ticket_spec.rb
index e47e8a718..a230bf54c 100644
--- a/spec/models/ticket_spec.rb
+++ b/spec/models/ticket_spec.rb
@@ -516,6 +516,43 @@ RSpec.describe Ticket, type: :model do
       end
     end
 
+    describe '#trigger_based_notification?' do
+      let(:ticket) { create(:ticket) }
+
+      context 'with a normal user' do
+        let(:customer) { create(:customer) }
+
+        it 'send trigger base notification' do
+          expect(ticket.send(:trigger_based_notification?, customer)).to eq(true)
+        end
+      end
+
+      context 'with a permanent failed user' do
+
+        let(:failed_date) { 1.second.ago }
+
+        let(:customer) do
+          user = create(:customer)
+          user.preferences.merge!(mail_delivery_failed: true, mail_delivery_failed_data: failed_date)
+          user.save!
+          user
+        end
+
+        it 'send no trigger base notification' do
+          expect(ticket.send(:trigger_based_notification?, customer)).to eq(false)
+        end
+
+        context 'with failed date 61 days ago' do
+
+          let(:failed_date) { 61.days.ago }
+
+          it 'send trigger base notification' do
+            expect(ticket.send(:trigger_based_notification?, customer)).to eq(true)
+          end
+        end
+      end
+    end
+
     describe '#subject_build' do
       context 'with default "ticket_hook_position" setting ("right")' do
         it 'returns the given string followed by a ticket reference (of the form "[Ticket#123]")' do
@@ -757,7 +794,7 @@ RSpec.describe Ticket, type: :model do
     end
 
     describe '#pending_time' do
-      subject(:ticket) { create(:ticket, pending_time: Time.zone.now + 2.days) }
+      subject(:ticket) { create(:ticket, pending_time: 2.days.from_now) }
 
       context 'when #state is updated to any non-"pending" value' do
         it 'is reset to nil' do