diff --git a/app/jobs/cron/purge_old_email_event_job.rb b/app/jobs/cron/purge_old_email_event_job.rb
new file mode 100644
index 000000000..b748a0fea
--- /dev/null
+++ b/app/jobs/cron/purge_old_email_event_job.rb
@@ -0,0 +1,7 @@
+class Cron::PurgeOldEmailEventJob < Cron::CronJob
+  self.schedule_expression = "every week at 3:00"
+
+  def perform
+    EmailEvent.outdated.destroy_all
+  end
+end
diff --git a/app/models/email_event.rb b/app/models/email_event.rb
index 429d2515c..68e80401e 100644
--- a/app/models/email_event.rb
+++ b/app/models/email_event.rb
@@ -13,14 +13,18 @@
 #  message_id   :string
 #
 class EmailEvent < ApplicationRecord
+  RETENTION_DURATION = 1.month
+
   enum status: {
     dispatched: 'dispatched',
     dispatch_error: 'dispatch_error'
   }
+
   scope :dolist, -> { dolist_smtp.or(dolist_api) }
   scope :dolist_smtp, -> { where(method: 'dolist_smtp') }
   scope :dolist_api, -> { where(method: 'dolist_api') }
   scope :sendinblue, -> { where(method: 'sendinblue') }
+  scope :outdated, -> { where("created_at < ?", RETENTION_DURATION.ago) }
 
   class << self
     def create_from_message!(message, status:)
diff --git a/spec/jobs/cron/purge_old_email_event_job_spec.rb b/spec/jobs/cron/purge_old_email_event_job_spec.rb
new file mode 100644
index 000000000..79061de3b
--- /dev/null
+++ b/spec/jobs/cron/purge_old_email_event_job_spec.rb
@@ -0,0 +1,14 @@
+RSpec.describe Cron::PurgeOldEmailEventJob, type: :job do
+  describe 'perform' do
+    subject { Cron::PurgeOldEmailEventJob.perform_now }
+    let(:older_than_retention_duration) { create(:email_event, :dolist, created_at: Time.zone.now.utc - (EmailEvent::RETENTION_DURATION + 1.day)) }
+    let(:more_recent_than_retention_duraiton) { create(:email_event, :dolist, created_at: Time.zone.now.utc - (EmailEvent::RETENTION_DURATION - 1.day)) }
+    before do
+      older_than_retention_duration
+      more_recent_than_retention_duraiton
+    end
+
+    it { expect { subject }.to change { EmailEvent.count }.by(-1) }
+    it { expect { subject }.to change { EmailEvent.exists?(id: older_than_retention_duration.id) }.from(true).to(false) }
+  end
+end