diff --git a/mailpoet/assets/css/src/generic/_helpers.scss b/mailpoet/assets/css/src/generic/_helpers.scss
index 9280a82782..c705e611b5 100644
--- a/mailpoet/assets/css/src/generic/_helpers.scss
+++ b/mailpoet/assets/css/src/generic/_helpers.scss
@@ -67,3 +67,21 @@ span.mailpoet-gap-half {
 .not-small-screen {
   @include respond-to(small-screen) { display: none !important; }
 }
+
+.with-spinner {
+  pointer-events: none;
+  touch-action: none;
+
+  &:after {
+    background: rgba(#fff, .8) no-repeat center;
+    background-image: 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');
+    background-size: 24px 24px;
+    border-radius: 2px;
+    content: '';
+    height: calc(100% + 2px);
+    left: -1px;
+    position: absolute;
+    top: -1px;
+    width: calc(100% + 2px);
+  }
+}
diff --git a/mailpoet/assets/js/src/common/index.ts b/mailpoet/assets/js/src/common/index.ts
index 326f7b1d1e..8e7d0c4d0f 100644
--- a/mailpoet/assets/js/src/common/index.ts
+++ b/mailpoet/assets/js/src/common/index.ts
@@ -11,3 +11,4 @@ export * from './listings';
 export * from './error_boundary';
 export * from './functions';
 export * from './utils';
+export * from './thumbnail';
diff --git a/mailpoet/assets/js/src/common/utils.ts b/mailpoet/assets/js/src/common/utils.ts
index 9790a3fe58..49313b2c28 100644
--- a/mailpoet/assets/js/src/common/utils.ts
+++ b/mailpoet/assets/js/src/common/utils.ts
@@ -1,4 +1,3 @@
 export const getLinkRegex = () => /\[link\](.*?)\[\/link\]/g;
 export const isTruthy = (value: string | number | boolean) =>
   [1, '1', true, 'true'].includes(value);
-
diff --git a/mailpoet/assets/js/src/newsletter_editor/components/save.js b/mailpoet/assets/js/src/newsletter_editor/components/save.js
index ccc051bff6..e02724f617 100644
--- a/mailpoet/assets/js/src/newsletter_editor/components/save.js
+++ b/mailpoet/assets/js/src/newsletter_editor/components/save.js
@@ -6,7 +6,7 @@ import Marionette from 'backbone.marionette';
 import $ from 'jquery';
 import Blob from 'blob';
 import FileSaver from 'file-saver';
-import * as Thumbnail from 'common/thumbnail.ts';
+import { isTruthy, fromNewsletter } from 'common';
 import _ from 'underscore';
 import SuperModel from 'backbone.supermodel/build/backbone.supermodel';
 
@@ -99,7 +99,7 @@ Module.save = function () {
 };
 
 Module.saveTemplate = function (options) {
-  return Thumbnail.fromNewsletter(App.toJSON()).then(function (thumbnail) {
+  return fromNewsletter(App.toJSON()).then(function (thumbnail) {
     var data = _.extend(options || {}, {
       thumbnail_data: thumbnail,
       body: JSON.stringify(App.getBody()),
@@ -116,7 +116,7 @@ Module.saveTemplate = function (options) {
 };
 
 Module.exportTemplate = function (options) {
-  return Thumbnail.fromNewsletter(App.toJSON()).then(function (thumbnail) {
+  return fromNewsletter(App.toJSON()).then(function (thumbnail) {
     var data = _.extend(options || {}, {
       thumbnail_data: thumbnail,
       body: App.getBody(),
@@ -573,6 +573,9 @@ Module.NewsletterPreviewModel = SuperModel.extend({
     previewSendingError: false,
     previewSendingSuccess: false,
     sendingPreview: false,
+    mssPendingApproval: window.mailpoet_mss_key_pending_approval,
+    mssKeyPendingApprovalRefreshMessage: true,
+    awaitingKeyCheck: false,
   },
 });
 
@@ -588,6 +591,7 @@ Module.NewsletterPreviewView = Marionette.View.extend({
     return {
       'change .mailpoet_browser_preview_type': 'changeBrowserPreviewType',
       'click #mailpoet_send_preview': 'sendPreview',
+      'click #refresh-mss-key-status': 'refreshMssKeyStatus',
     };
   },
   initialize: function (options) {
@@ -606,7 +610,11 @@ Module.NewsletterPreviewView = Marionette.View.extend({
         this.$('#mailpoet_preview_to_email').val() || window.currentUserEmail,
       previewSendingError: this.model.get('previewSendingError'),
       sendingPreview: this.model.get('sendingPreview'),
-      mssKeyPendingApproval: window.mailpoet_mss_key_pending_approval,
+      mssKeyPendingApproval: this.model.get('mssPendingApproval'),
+      mssKeyPendingApprovalRefreshMessage: this.model.get(
+        'mssKeyPendingApprovalRefreshMessage',
+      ),
+      awaitingKeyCheck: this.model.get('awaitingKeyCheck'),
     };
   },
   changeBrowserPreviewType: function (event) {
@@ -712,11 +720,11 @@ Module.NewsletterPreviewView = Marionette.View.extend({
                 )}</p>
                 <p>
                   <a
-                    href=${MailPoet.MailPoetComUrlFactory.getFreePlanUrl({
+                    href='${MailPoet.MailPoetComUrlFactory.getFreePlanUrl({
                       utm_campaign: 'sending-error',
-                    })}
-                    target="_blank"
-                    rel="noopener noreferrer"
+                    })}'
+                    target='_blank'
+                    rel='noopener noreferrer'
                   >
                     ${MailPoet.I18n.t(
                       'newsletterPreviewErrorSignUpForSendingService',
@@ -744,6 +752,31 @@ Module.NewsletterPreviewView = Marionette.View.extend({
       });
     return undefined;
   },
+  refreshMssKeyStatus: function () {
+    this.model.set('awaitingKeyCheck', true);
+
+    return MailPoet.Ajax.post({
+      api_version: window.mailpoet_api_version,
+      endpoint: 'services',
+      action: 'checkMSSKey',
+      data: {
+        key: window.mailpoet_api_key,
+      },
+    })
+      .done((response) => {
+        this.model.set('awaitingKeyCheck', false);
+        if (response.data && response.data.result.code === 200) {
+          this.model.set(
+            'mssPendingApproval',
+            !isTruthy(response.data.result.data.is_approved),
+          );
+          this.model.set('mssKeyPendingApprovalRefreshMessage', false);
+        }
+      })
+      .fail(() => {
+        this.model.set('awaitingKeyCheck', false);
+      });
+  },
 });
 
 App.on('before:start', function (BeforeStartApp) {
diff --git a/mailpoet/tests/javascript_newsletter_editor/newsletter_editor/components/save.spec.js b/mailpoet/tests/javascript_newsletter_editor/newsletter_editor/components/save.spec.js
index 6f0934a94c..0015ced7df 100644
--- a/mailpoet/tests/javascript_newsletter_editor/newsletter_editor/components/save.spec.js
+++ b/mailpoet/tests/javascript_newsletter_editor/newsletter_editor/components/save.spec.js
@@ -278,7 +278,7 @@ describe('Save', function () {
             },
           },
           'newsletter_editor/App': { App },
-          'common/thumbnail.ts': {
+          common: {
             fromNewsletter: function () {
               return promiseMock;
             },
diff --git a/mailpoet/views/newsletter/editor.html b/mailpoet/views/newsletter/editor.html
index d19fed0b4b..1e0b95eaf7 100644
--- a/mailpoet/views/newsletter/editor.html
+++ b/mailpoet/views/newsletter/editor.html
@@ -374,6 +374,7 @@
   var mailpoet_email_editor_tutorial_seen  = '<%= editor_tutorial_seen %>';
   var mailpoet_email_editor_tutorial_url = '<%= cdn_url('newsletter-editor/editor-drag-demo.20190226-1505.mp4') %>';
   var mailpoet_installed_at = '<%= settings.installed_at %>';
+  var mailpoet_api_key = '<%= settings.mta.mailpoet_api_key %>';
 </script>
 
 <% endblock %>
diff --git a/mailpoet/views/newsletter/templates/components/newsletterPreview.hbs b/mailpoet/views/newsletter/templates/components/newsletterPreview.hbs
index 785cbafd2e..a80dc0df3c 100644
--- a/mailpoet/views/newsletter/templates/components/newsletterPreview.hbs
+++ b/mailpoet/views/newsletter/templates/components/newsletterPreview.hbs
@@ -57,8 +57,11 @@
     </form>
 
     {{#if mssKeyPendingApproval }}
-      <div class="mailpoet_error">
+      <div class="mailpoet_error pendindig_approval_error{{#if awaitingKeyCheck}} with-spinner{{/if}}">
         <%= __('You’ll soon be able to send once our team reviews your account. In the meantime, you can send previews to [link]your authorized emails[/link].')|replaceLinkTags('https://account.mailpoet.com/authorization', {'target': '_blank', 'rel': 'noopener noreferrer'})|raw %>
+        {{#if mssKeyPendingApprovalRefreshMessage }}
+        <%= __('If you have already received approval email, click [link]here[/link] to update the status.')|replaceLinkTags('#', {'id': 'refresh-mss-key-status'})|raw %>
+        {{/if}}
       </div>
     {{/if}}
   </div>