diff --git a/app/mailers/administrateur_mailer.rb b/app/mailers/administrateur_mailer.rb
index 0ed0d6598..19df4f960 100644
--- a/app/mailers/administrateur_mailer.rb
+++ b/app/mailers/administrateur_mailer.rb
@@ -8,6 +8,8 @@ class AdministrateurMailer < ApplicationMailer
     @expiration_date = @user.reset_password_sent_at + Devise.reset_password_within
     @subject = "N'oubliez pas d’activer votre compte administrateur"
 
+    bypass_unverified_mail_protection!
+
     mail(to: user.email,
       subject: @subject,
       reply_to: CONTACT_EMAIL)
diff --git a/app/mailers/administration_mailer.rb b/app/mailers/administration_mailer.rb
index baa26e321..7880eb8e3 100644
--- a/app/mailers/administration_mailer.rb
+++ b/app/mailers/administration_mailer.rb
@@ -8,6 +8,8 @@ class AdministrationMailer < ApplicationMailer
     @author_name = "Équipe de #{APPLICATION_NAME}"
     subject = "Activez votre compte administrateur"
 
+    bypass_unverified_mail_protection!
+
     mail(to: user.email,
       subject: subject,
       reply_to: CONTACT_EMAIL)
@@ -16,6 +18,8 @@ class AdministrationMailer < ApplicationMailer
   def refuse_admin(admin_email)
     subject = "Votre demande de compte a été refusée"
 
+    bypass_unverified_mail_protection!
+
     mail(to: admin_email,
       subject: subject,
       reply_to: CONTACT_EMAIL)
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index f45892699..08d45509a 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -41,6 +41,8 @@ class UserMailer < ApplicationMailer
 
     configure_defaults_for_user(user)
 
+    bypass_unverified_mail_protection!
+
     mail(to: user.email,
       subject: subject,
       reply_to: Current.contact_email)
@@ -54,6 +56,8 @@ class UserMailer < ApplicationMailer
 
     configure_defaults_for_user(user)
 
+    bypass_unverified_mail_protection!
+
     mail(to: user.email,
       subject: subject,
       reply_to: Current.contact_email)
diff --git a/spec/mailers/administrateur_mailer_spec.rb b/spec/mailers/administrateur_mailer_spec.rb
index a42edb2b3..baf023934 100644
--- a/spec/mailers/administrateur_mailer_spec.rb
+++ b/spec/mailers/administrateur_mailer_spec.rb
@@ -23,7 +23,10 @@ RSpec.describe AdministrateurMailer, type: :mailer do
     subject { described_class.activate_before_expiration(user, token) }
 
     context 'without SafeMailer configured' do
-      it { expect(subject[BalancerDeliveryMethod::FORCE_DELIVERY_METHOD_HEADER]&.value).to eq(nil) }
+      it do
+        expect(subject[BalancerDeliveryMethod::FORCE_DELIVERY_METHOD_HEADER]&.value).to eq(nil)
+        expect(subject['BYPASS_UNVERIFIED_MAIL_PROTECTION']).to be_present
+      end
     end
 
     context 'with SafeMailer configured' do
diff --git a/spec/mailers/administration_mailer_spec.rb b/spec/mailers/administration_mailer_spec.rb
index 42a416acf..e4dc16b2a 100644
--- a/spec/mailers/administration_mailer_spec.rb
+++ b/spec/mailers/administration_mailer_spec.rb
@@ -9,8 +9,11 @@ RSpec.describe AdministrationMailer, type: :mailer do
     it { expect(subject.subject).not_to be_empty }
 
     describe "when the user has not been activated" do
-      it { expect(subject.body).to include(admin_activate_path(token: token)) }
-      it { expect(subject.body).not_to include(edit_user_password_url(admin_user, reset_password_token: token)) }
+      it do
+        expect(subject.body).to include(admin_activate_path(token: token))
+        expect(subject.body).not_to include(edit_user_password_url(admin_user, reset_password_token: token))
+        expect(subject['BYPASS_UNVERIFIED_MAIL_PROTECTION']).to be_present
+      end
     end
 
     describe "when the user is already active" do
@@ -25,6 +28,9 @@ RSpec.describe AdministrationMailer, type: :mailer do
 
     subject { described_class.refuse_admin(mail) }
 
-    it { expect(subject.subject).not_to be_empty }
+    it do
+      expect(subject.subject).not_to be_empty
+      expect(subject['BYPASS_UNVERIFIED_MAIL_PROTECTION']).to be_present
+    end
   end
 end
diff --git a/spec/mailers/user_mailer_spec.rb b/spec/mailers/user_mailer_spec.rb
index 7b6ef9641..0dc7a9212 100644
--- a/spec/mailers/user_mailer_spec.rb
+++ b/spec/mailers/user_mailer_spec.rb
@@ -168,4 +168,17 @@ RSpec.describe UserMailer, type: :mailer do
       end
     end
   end
+
+  describe '.invite_instructeur' do
+    subject { described_class.invite_instructeur(user, "reset_token") }
+
+    it { expect(subject['BYPASS_UNVERIFIED_MAIL_PROTECTION']).to be_present }
+  end
+
+  describe '.invite_gestionnaire' do
+    let(:groupe_gestionnaire) { create(:groupe_gestionnaire) }
+    subject { described_class.invite_gestionnaire(user, "reset_token", groupe_gestionnaire) }
+
+    it { expect(subject['BYPASS_UNVERIFIED_MAIL_PROTECTION']).to be_present }
+  end
 end