diff --git a/app/controllers/idv/gpo_controller.rb b/app/controllers/idv/gpo_controller.rb
index e361f53840b..0ba648025ef 100644
--- a/app/controllers/idv/gpo_controller.rb
+++ b/app/controllers/idv/gpo_controller.rb
@@ -27,6 +27,7 @@ def create
         redirect_to capture_password_url
       elsif resend_requested?
         resend_letter
+        flash[:success] = t('idv.messages.gpo.another_letter_on_the_way')
         redirect_to idv_come_back_later_url
       else
         redirect_to idv_review_url
diff --git a/app/controllers/idv/review_controller.rb b/app/controllers/idv/review_controller.rb
index 24d07fef588..6a1437a45a0 100644
--- a/app/controllers/idv/review_controller.rb
+++ b/app/controllers/idv/review_controller.rb
@@ -52,7 +52,13 @@ def create
 
       user_session[:need_personal_key_confirmation] = true
 
-      flash[:success] = t('idv.messages.confirm')
+      flash[:success] =
+        if gpo_user_flow?
+          t('idv.messages.gpo.letter_on_the_way')
+        else
+          t('idv.messages.confirm')
+        end
+
       redirect_to next_step
 
       analytics.idv_review_complete(
diff --git a/config/locales/idv/en.yml b/config/locales/idv/en.yml
index 39e8e54e503..d3d9185aabf 100644
--- a/config/locales/idv/en.yml
+++ b/config/locales/idv/en.yml
@@ -191,8 +191,10 @@ en:
       gpo:
         address_on_file_html: We will mail a letter with a <strong>one-time
           code</strong> to the address that you provided on the previous step.
+        another_letter_on_the_way: We are sending you another letter
         info_alert: You’ll need to wait until your letter is delivered to finish
           verifying your identity.
+        letter_on_the_way: We are sending you a letter
         resend: Send me another letter
         resend_code_warning: If you request a new letter now, the one-time code from
           your current letter will remain valid for a limited time. You may
diff --git a/config/locales/idv/es.yml b/config/locales/idv/es.yml
index ddbacbcb285..430b351365d 100644
--- a/config/locales/idv/es.yml
+++ b/config/locales/idv/es.yml
@@ -199,8 +199,10 @@ es:
       gpo:
         address_on_file_html: Le enviaremos una carta con <strong>un código único
           </strong> a la dirección que nos facilitó en el paso anterior.
+        another_letter_on_the_way: Te enviaremos otra carta
         info_alert: Tendrá que esperar a que su carta sea entregada para terminar de
           verificar su identidad.
+        letter_on_the_way: Te enviaremos una carta
         resend: Envíeme otra carta
         resend_code_warning: Si solicitas una nueva carta ahora, el código de una sola
           vez de tu carta actual seguirá siendo válido durante un tiempo
diff --git a/config/locales/idv/fr.yml b/config/locales/idv/fr.yml
index 92350997147..a25b86cfbe0 100644
--- a/config/locales/idv/fr.yml
+++ b/config/locales/idv/fr.yml
@@ -211,8 +211,10 @@ fr:
         address_on_file_html: Nous enverrons une lettre avec <strong>un code à usage
           unique </strong> à l’adresse que vous avez indiquée à l’étape
           précédente.
+        another_letter_on_the_way: Nous vous envoyons une autre lettre
         info_alert: Vous devrez attendre la livraison de votre lettre pour compléter la
           vérification de votre identité.
+        letter_on_the_way: Nous vous envoyons une lettre
         resend: Envoyez-moi une autre lettre
         resend_code_warning: Si vous demandez une nouvelle lettre maintenant, le code à
           usage unique de votre lettre actuelle restera valable pendant une
diff --git a/spec/features/idv/steps/gpo_step_spec.rb b/spec/features/idv/steps/gpo_step_spec.rb
index 60fc77f79aa..739d4777dfb 100644
--- a/spec/features/idv/steps/gpo_step_spec.rb
+++ b/spec/features/idv/steps/gpo_step_spec.rb
@@ -4,13 +4,16 @@
   include IdvStepHelper
   include OidcAuthHelper
 
-  it 'redirects to the review step when the user chooses to verify by letter', :js do
+  it 'redirects to and completes the review step when the user chooses to verify by letter', :js do
     start_idv_from_sp
     complete_idv_steps_before_gpo_step
     click_on t('idv.buttons.mail.send')
 
     expect(page).to have_content(t('idv.titles.session.review', app_name: APP_NAME))
     expect(page).to have_current_path(idv_review_path)
+
+    complete_review_step
+    expect(page).to have_content(t('idv.messages.gpo.letter_on_the_way'))
   end
 
   it 'allows the user to go back', :js do
@@ -48,6 +51,7 @@
         to change { GpoConfirmation.count }.from(1).to(2)
       expect_user_to_be_unverified(user)
 
+      expect(page).to have_content(t('idv.messages.gpo.another_letter_on_the_way'))
       expect(page).to have_content(t('idv.titles.come_back_later'))
       expect(page).to have_current_path(idv_come_back_later_path)