diff --git a/cms/envs/common.py b/cms/envs/common.py
index d0ab304b83..51cef45c24 100644
--- a/cms/envs/common.py
+++ b/cms/envs/common.py
@@ -2415,3 +2415,7 @@ DEFAULT_EMAIL_LOGO_URL = 'https://edx-cdn.org/v3/default/logo.png'
 ############## Settings for course import olx validation ############################
 COURSE_OLX_VALIDATION_STAGE = 1
 COURSE_OLX_VALIDATION_IGNORE_LIST = None
+
+################# show account activate cta after register ########################
+SHOW_ACTIVATE_CTA_POPUP_COOKIE_NAME = 'show-account-activation-popup'
+SHOW_ACCOUNT_ACTIVATION_CTA = False
diff --git a/cms/envs/production.py b/cms/envs/production.py
index 679cc19295..1ce1a223ae 100644
--- a/cms/envs/production.py
+++ b/cms/envs/production.py
@@ -608,3 +608,6 @@ COURSE_OLX_VALIDATION_IGNORE_LIST = ENV_TOKENS.get(
     'COURSE_OLX_VALIDATION_IGNORE_LIST',
     COURSE_OLX_VALIDATION_IGNORE_LIST
 )
+
+################# show account activate cta after register ########################
+SHOW_ACCOUNT_ACTIVATION_CTA = ENV_TOKENS.get('SHOW_ACCOUNT_ACTIVATION_CTA', SHOW_ACCOUNT_ACTIVATION_CTA)
diff --git a/common/djangoapps/student/views/dashboard.py b/common/djangoapps/student/views/dashboard.py
index 34bb107243..779a1320ec 100644
--- a/common/djangoapps/student/views/dashboard.py
+++ b/common/djangoapps/student/views/dashboard.py
@@ -742,6 +742,8 @@ def student_dashboard(request):  # lint-amnesty, pylint: disable=too-many-statem
             enr for enr in course_enrollments if entitlement.enrollment_course_run.course_id != enr.course_id
         ]
 
+    show_account_activation_popup = request.COOKIES.get(settings.SHOW_ACTIVATE_CTA_POPUP_COOKIE_NAME, None)
+
     context = {
         'urls': urls,
         'programs_data': programs_data,
@@ -771,6 +773,7 @@ def student_dashboard(request):  # lint-amnesty, pylint: disable=too-many-statem
         'verification_errors': verification_errors,
         'denied_banner': denied_banner,
         'billing_email': settings.PAYMENT_SUPPORT_EMAIL,
+        'show_account_activation_popup': show_account_activation_popup,
         'user': user,
         'logout_url': reverse('logout'),
         'platform_name': platform_name,
@@ -830,4 +833,12 @@ def student_dashboard(request):  # lint-amnesty, pylint: disable=too-many-statem
         'resume_button_urls': resume_button_urls
     })
 
-    return render_to_response('dashboard.html', context)
+    response = render_to_response('dashboard.html', context)
+    if show_account_activation_popup:
+        response.delete_cookie(
+            settings.SHOW_ACTIVATE_CTA_POPUP_COOKIE_NAME,
+            domain=settings.SESSION_COOKIE_DOMAIN,
+            path='/',
+        )
+
+    return response
diff --git a/lms/envs/common.py b/lms/envs/common.py
index 7f585c3aec..f55fa1c59d 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -4720,3 +4720,13 @@ DEFAULT_EMAIL_LOGO_URL = 'https://edx-cdn.org/v3/default/logo.png'
 ################# Settings for olx validation. #################
 COURSE_OLX_VALIDATION_STAGE = 1
 COURSE_OLX_VALIDATION_IGNORE_LIST = None
+
+################# show account activate cta after register ########################
+SHOW_ACTIVATE_CTA_POPUP_COOKIE_NAME = 'show-account-activation-popup'
+# .. toggle_name: SOME_FEATURE_NAME
+# .. toggle_implementation: DjangoSetting
+# .. toggle_default: False
+# .. toggle_description: Flag would be used to show account activation popup after the registration
+# .. toggle_use_cases: open_edx
+# .. toggle_tickets: https://github.com/edx/edx-platform/pull/27661
+SHOW_ACCOUNT_ACTIVATION_CTA = False
diff --git a/lms/envs/production.py b/lms/envs/production.py
index 86dff145ed..70bfa038ad 100644
--- a/lms/envs/production.py
+++ b/lms/envs/production.py
@@ -1056,3 +1056,6 @@ COURSE_OLX_VALIDATION_IGNORE_LIST = ENV_TOKENS.get(
     'COURSE_OLX_VALIDATION_IGNORE_LIST',
     COURSE_OLX_VALIDATION_IGNORE_LIST
 )
+
+################# show account activate cta after register ########################
+SHOW_ACCOUNT_ACTIVATION_CTA = ENV_TOKENS.get('SHOW_ACCOUNT_ACTIVATION_CTA', SHOW_ACCOUNT_ACTIVATION_CTA)
diff --git a/lms/static/js/dashboard/legacy.js b/lms/static/js/dashboard/legacy.js
index 966dc4c93d..2ad6ac76c2 100644
--- a/lms/static/js/dashboard/legacy.js
+++ b/lms/static/js/dashboard/legacy.js
@@ -228,6 +228,50 @@
              return false;
          });
 
+         $('#send_cta_email').click(function(e) {
+             $.ajax({
+                 type: 'POST',
+                 url: urls.sendAccountActivationEmail,
+                 data: $(this).serializeArray(),
+                 success: function() {
+                     $('#activate-account-modal p svg').remove();
+                      // xss-lint: disable=javascript-jquery-append
+                     $('#activate-account-modal p').append(
+                       // xss-lint: disable=javascript-concat-html
+                       '<svg  style="vertical-align:bottom" width="20" height="20"' +
+                       // xss-lint: disable=javascript-concat-html
+                       'viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">\n' +
+                       // xss-lint: disable=javascript-concat-html
+                       '<path d="M9 16.2L4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4L9 16.2z" fill="#178253"/>\n' +
+                       '</svg>'
+                     );
+                 }
+             });
+             e.preventDefault();
+             $('#activate-account-modal p svg').remove();
+             // xss-lint: disable=javascript-jquery-append
+             $('#activate-account-modal p').append(
+               // xss-lint: disable=javascript-concat-html
+               '<svg  class="fa-pulse" style="vertical-align:bottom" width="24" height="24"' +
+               // xss-lint: disable=javascript-concat-html
+               'viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">\n' +
+               // xss-lint: disable=javascript-concat-html
+               '<path d="M22 12A10 10 0 116.122 3.91l1.176 1.618A8 8 0 1020 12h2z" fill="#6c757d"/>\n' +
+               '</svg>'
+             );
+         });
+
+         $('#activate-account-modal').on('click', '#button', function() {
+             $('#activate-account-modal').css('display', 'none');
+             $('#lean_overlay').css({display: 'none'});
+         });
+         if ($('#activate-account-modal').css('display') === 'block') {
+             $('#lean_overlay').css({
+                 display: 'block',
+                 'z-index': 0
+             });
+         }
+
          $('.action-email-settings').each(function(index) {
              $(this).attr('id', 'email-settings-' + index);
             // a bit of a hack, but gets the unique selector for the modal trigger
diff --git a/lms/static/sass/multicourse/_dashboard.scss b/lms/static/sass/multicourse/_dashboard.scss
index c5ab1c49b3..b12bcd0fca 100644
--- a/lms/static/sass/multicourse/_dashboard.scss
+++ b/lms/static/sass/multicourse/_dashboard.scss
@@ -1641,6 +1641,59 @@ a.fade-cover {
   }
 }
 
+#activate-account-modal {
+    display: block;
+    position: fixed;
+    left: 50%;
+    top: 50%;
+    transform: translate(-50%, -50%);
+    margin-top: -60px;
+    text-align: left;
+    height: 252px;
+    width: 450px;
+    box-shadow: none;
+    background: none;
+
+    .inner-wrapper {
+      h3 {
+          font-family: inherit;
+          padding: 1.5rem 1rem 1rem 1rem;
+          text-align: left;
+          font-weight: bold;
+          font-size: 1.3rem;
+          line-height: 1.75rem;
+      }
+        border: none;
+        border-radius: 5px;
+    }
+}
+
+@media (max-width: 460px) and (min-width: 360px) {
+    #activate-account-modal {
+        width: 350px;
+    }
+}
+
+@media (max-width: 360px) {
+    #activate-account-modal {
+        width: 300px;
+    }
+}
+
+.activate-account-modal-button {
+    text-align: right;
+    display: block;
+    padding: 1rem 1rem 1rem 0;
+
+    .btn-primary {
+        text-transform: none;
+        font-weight: 500;
+    }
+}
+.activate-account-modal-body {
+    padding: 0 1rem;
+}
+
 .reasons_survey {
   margin: 20px;
 
diff --git a/lms/templates/dashboard.html b/lms/templates/dashboard.html
index b0351a41cb..f9943bc142 100644
--- a/lms/templates/dashboard.html
+++ b/lms/templates/dashboard.html
@@ -46,7 +46,9 @@ from common.djangoapps.student.models import CourseEnrollment
       edx.dashboard.legacy.init({
         dashboard: "${reverse('dashboard') | n, js_escaped_string}",
         signInUser: "${reverse('signin_user') | n, js_escaped_string}",
-        changeEmailSettings: "${reverse('change_email_settings') | n, js_escaped_string}"
+        changeEmailSettings: "${reverse('change_email_settings') | n, js_escaped_string}",
+        sendAccountActivationEmail: "${reverse('send_account_activation_email') | n, js_escaped_string}"
+
       });
     });
   </script>
@@ -316,6 +318,35 @@ from common.djangoapps.student.models import CourseEnrollment
     </div>
 </main>
 
+%if show_account_activation_popup:
+    <div id="activate-account-modal" class="modal activate-account-modal" aria-hidden="true">
+      <div class="inner-wrapper" role="dialog" aria-labelledby="activate-account-modal-title" aria-live="polite">
+          <h3>
+             ${_("Activate your account so you can log back in")}
+            <span class="sr">,
+              ## Translators: this text gives status on if the modal interface (a menu or piece of UI that takes the full focus of the screen) is open or not
+              ${_("window open")}
+            </span>
+        </h3>
+          <p class="activate-account-modal-body">${Text(_("We sent an email to {strong_start}{email}{strong_end} with a link to activate your account. Can’t find it? Check your spam folder or {link_start}resend the email{link_end}.")).format(
+              strong_start=HTML('<strong>'),
+              email=user.email,
+              strong_end=HTML('</strong>'),
+              link_start=HTML('<a href="#" id="send_cta_email" >'),
+              link_end=HTML('</a>')
+              )}
+          </p>
+           <div class="activate-account-modal-button">
+               <button class="btn btn-primary" id="button">
+                   ${Text(_("Continue to {platform_name}")).format(platform_name=settings.PLATFORM_NAME)}
+                   <svg  style="vertical-align:bottom" width="24" height="24" viewBox="0 0 24 24" fill="white" xmlns="http://www.w3.org/2000/svg"><path d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8-8-8z"/></svg>
+               </button>
+           </div>
+
+      </div>
+    </div>
+%endif
+
 <div id="email-settings-modal" class="modal" aria-hidden="true">
   <div class="inner-wrapper" role="dialog" aria-labelledby="email-settings-title">
     <button class="close-modal">
diff --git a/lms/templates/main.html b/lms/templates/main.html
index 741a4092fd..4e81c01231 100644
--- a/lms/templates/main.html
+++ b/lms/templates/main.html
@@ -213,6 +213,7 @@ from common.djangoapps.pipeline_mako import render_require_js_path_overrides
   <script type="text/javascript" src="${static.url('js/header/header.js')}"></script>
   <%static:optional_include_mako file="body-extra.html" is_theming_enabled="True" />
   <script type="text/javascript" src="${static.url('js/src/jquery_extend_patch.js')}"></script>
+  <div id="lean_overlay"></div>
 </body>
 </html>
 
diff --git a/openedx/core/djangoapps/user_authn/api/tests/test_views.py b/openedx/core/djangoapps/user_authn/api/tests/test_views.py
index 8edef4ee01..efa16168f6 100644
--- a/openedx/core/djangoapps/user_authn/api/tests/test_views.py
+++ b/openedx/core/djangoapps/user_authn/api/tests/test_views.py
@@ -9,6 +9,9 @@ from django.conf import settings
 from django.urls import reverse
 from rest_framework.test import APITestCase
 
+from common.djangoapps.student.models import Registration
+from common.djangoapps.student.tests.factories import UserFactory
+from openedx.core.djangoapps.user_api.tests.test_views import UserAPITestCase
 from openedx.core.djangolib.testing.utils import skip_unless_lms
 from common.djangoapps.third_party_auth import pipeline
 from common.djangoapps.third_party_auth.tests.testutil import ThirdPartyAuthTestMixin, simulate_running_pipeline
@@ -175,3 +178,32 @@ class MFEContextViewTest(ThirdPartyAuthTestMixin, APITestCase):
 
         assert response.status_code == 200
         assert response.data['countryCode'] == self.country_code
+
+
+@skip_unless_lms
+class SendAccountActivationEmail(UserAPITestCase):
+    """
+    Test for send activation email view
+    """
+
+    def setUp(self):
+        """
+        Create a user, then log in.
+        """
+        super().setUp()
+        self.user = UserFactory()
+        Registration().register(self.user)
+        result = self.client.login(username=self.user.username, password="test")
+        assert result, 'Could not log in'
+        self.path = reverse('send_account_activation_email')
+
+    @patch('common.djangoapps.student.views.management.compose_activation_email')
+    def test_send_email_to_inactive_user_via_cta_dialog(self, email):
+        """
+        Tests when user clicks on resend activation email on CTA dialog box, system
+        sends an activation email to the user.
+        """
+        self.user.is_active = False
+        self.user.save()
+        self.client.post(self.path)
+        assert email.called is True, 'method should have been called'
diff --git a/openedx/core/djangoapps/user_authn/api/urls.py b/openedx/core/djangoapps/user_authn/api/urls.py
index 2e9d4993f0..51c84eb683 100644
--- a/openedx/core/djangoapps/user_authn/api/urls.py
+++ b/openedx/core/djangoapps/user_authn/api/urls.py
@@ -4,9 +4,14 @@ Authn API urls
 
 from django.conf.urls import url
 
-from openedx.core.djangoapps.user_authn.api.views import MFEContextView
+from openedx.core.djangoapps.user_authn.api.views import MFEContextView, SendAccountActivationEmail
 
 urlpatterns = [
     url(r'^third_party_auth_context$', MFEContextView.as_view(), name='third_party_auth_context'),
     url(r'^mfe_context$', MFEContextView.as_view(), name='mfe_context'),
+    url(
+        r'^send_account_activation_email$',
+        SendAccountActivationEmail.as_view(),
+        name='send_account_activation_email'
+    ),
 ]
diff --git a/openedx/core/djangoapps/user_authn/api/views.py b/openedx/core/djangoapps/user_authn/api/views.py
index 08a631e843..b1789cb6d4 100644
--- a/openedx/core/djangoapps/user_authn/api/views.py
+++ b/openedx/core/djangoapps/user_authn/api/views.py
@@ -7,9 +7,12 @@ from rest_framework import status
 from rest_framework.response import Response
 from rest_framework.throttling import AnonRateThrottle
 from rest_framework.views import APIView
+from rest_framework.permissions import IsAuthenticated
+from edx_rest_framework_extensions.auth.session.authentication import SessionAuthenticationAllowInactiveUser
 
 from common.djangoapps.student.helpers import get_next_url_for_login_page
 from openedx.core.djangoapps.user_authn.views.utils import get_mfe_context
+from common.djangoapps.student.views import compose_and_send_activation_email
 
 
 class MFEContextThrottle(AnonRateThrottle):
@@ -45,3 +48,29 @@ class MFEContextView(APIView):
             status=status.HTTP_200_OK,
             data=context
         )
+
+
+class SendAccountActivationEmail(APIView):
+    """
+    API to to send the account activation email using account activation cta.
+    """
+    authentication_classes = (SessionAuthenticationAllowInactiveUser,)
+    permission_classes = (IsAuthenticated,)
+
+    def post(self, request, **kwargs):  # lint-amnesty, pylint: disable=unused-argument
+        """
+        Returns status code.
+        Arguments:
+            request (HttpRequest): The request, used to get the user
+        """
+        try:
+            user = request.user
+            if not user.is_active:
+                compose_and_send_activation_email(user, user.profile)
+            return Response(
+                status=status.HTTP_200_OK
+            )
+        except Exception:  # pylint: disable=broad-except
+            return Response(
+                status=status.HTTP_500_INTERNAL_SERVER_ERROR
+            )
diff --git a/openedx/core/djangoapps/user_authn/views/register.py b/openedx/core/djangoapps/user_authn/views/register.py
index b1afc17126..6c253e3fdf 100644
--- a/openedx/core/djangoapps/user_authn/views/register.py
+++ b/openedx/core/djangoapps/user_authn/views/register.py
@@ -538,6 +538,14 @@ class RegistrationView(APIView):
         redirect_url = get_redirect_url_with_host(root_url, redirect_to)
         response = self._create_response(request, {}, status_code=200, redirect_url=redirect_url)
         set_logged_in_cookies(request, response, user)
+        if not user.is_active and settings.SHOW_ACCOUNT_ACTIVATION_CTA:
+            response.set_cookie(
+                settings.SHOW_ACTIVATE_CTA_POPUP_COOKIE_NAME,
+                True,
+                domain=settings.SESSION_COOKIE_DOMAIN,
+                path='/',
+                secure=request.is_secure()
+            )  # setting the cookie to show account activation dialogue in platform and learning MFE
         return response
 
     def _handle_duplicate_email_username(self, request, data):