diff --git a/app/controllers/admin/system_emails_controller.rb b/app/controllers/admin/system_emails_controller.rb
index da86b1e9a..626680f43 100644
--- a/app/controllers/admin/system_emails_controller.rb
+++ b/app/controllers/admin/system_emails_controller.rb
@@ -1,9 +1,11 @@
 class Admin::SystemEmailsController < Admin::BaseController
 
-  before_action :load_system_email, only: [:view]
+  before_action :load_system_email, only: [:view, :preview_pending]
 
   def index
-    @system_emails = %w(proposal_notification_digest)
+    @system_emails = {
+      proposal_notification_digest: %w(view preview_pending)
+    }
   end
 
   def view
@@ -14,9 +16,22 @@ class Admin::SystemEmailsController < Admin::BaseController
     end
   end
 
+  def preview_pending
+    case @system_email
+    when "proposal_notification_digest"
+      @previews = ProposalNotification.where(id: unsent_proposal_notifications_ids)
+                                      .page(params[:page])
+    end
+  end
+
   private
 
   def load_system_email
     @system_email = params[:system_email_id]
   end
+
+  def unsent_proposal_notifications_ids
+    Notification.where(notifiable_type: "ProposalNotification", emailed_at: nil)
+                .group(:notifiable_id).count.keys
+  end
 end
diff --git a/app/views/admin/system_emails/index.html.erb b/app/views/admin/system_emails/index.html.erb
index 6e294d4e5..4d135d615 100644
--- a/app/views/admin/system_emails/index.html.erb
+++ b/app/views/admin/system_emails/index.html.erb
@@ -9,17 +9,24 @@
     </tr>
   </thead>
   <tbody>
-  <% @system_emails.each do |system_email| %>
-    <tr id="<%= system_email %>" class="system_email">
+  <% @system_emails.each do |system_email_title, system_email_actions| %>
+    <tr id="<%= system_email_title %>" class="system_email">
       <td>
-        <%= t("admin.system_emails.#{system_email}.title") %>
+        <%= t("admin.system_emails.#{system_email_title}.title") %>
       </td>
       <td>
-        <%= t("admin.system_emails.#{system_email}.description") %>
+        <%= t("admin.system_emails.#{system_email_title}.description") %>
       </td>
       <td class="text-right">
-        <%= link_to t("admin.shared.view"), admin_system_email_view_path(system_email),
-                                            class: "button hollow" %>
+        <% if system_email_actions.include?('view') %>
+          <%= link_to t("admin.shared.view"), admin_system_email_view_path(system_email_title),
+                                              class: "button hollow" %>
+        <% end %>
+        <% if system_email_actions.include?('preview_pending') %>
+          <%= link_to t("admin.system_emails.preview_pending.action"),
+                      admin_system_email_preview_pending_path(system_email_title),
+                      class: "button" %>
+        <% end %>
       </td>
     </tr>
   <% end %>
diff --git a/app/views/admin/system_emails/preview_pending.html.erb b/app/views/admin/system_emails/preview_pending.html.erb
new file mode 100644
index 000000000..6de1c993f
--- /dev/null
+++ b/app/views/admin/system_emails/preview_pending.html.erb
@@ -0,0 +1,16 @@
+<%= back_link_to admin_system_emails_path %>
+
+<% system_email_name = t("admin.system_emails.#{@system_email}.title") %>
+<h2><%= t("admin.system_emails.preview_pending.preview_of", name: system_email_name) %></h2>
+
+<div class="small-12 column">
+  <h4><%= t("admin.system_emails.preview_pending.pending_to_be_sent") %></h4>
+  <p><%= t("admin.system_emails.#{@system_email}.preview_detail") %></p>
+
+  <% @previews.each do |preview| %>
+    <%= render partial: "admin/system_emails/preview_pending/#{@system_email}",
+               locals: { preview: preview } %>
+  <% end %>
+</div>
+
+<%= paginate @previews %>
diff --git a/app/views/admin/system_emails/preview_pending/_proposal_notification_digest.html.erb b/app/views/admin/system_emails/preview_pending/_proposal_notification_digest.html.erb
new file mode 100644
index 000000000..7cdd4d66d
--- /dev/null
+++ b/app/views/admin/system_emails/preview_pending/_proposal_notification_digest.html.erb
@@ -0,0 +1,33 @@
+<% if preview.proposal.present? %>
+  <div class="callout highlight">
+    <div class="row">
+      <div class="small-12 medium-6 column">
+        <strong><%= t("admin.shared.proposal") %></strong><br>
+        <%= link_to preview.proposal.title, proposal_url(preview.proposal) %>
+      </div>
+      <div class="small-12 medium-6 column">
+        <strong><%= t("admin.shared.title") %></strong><br>
+        <%= link_to preview.title, proposal_url(preview.proposal, anchor: "tab-notifications") %>
+      </div>
+    </div>
+    <div class="row">
+      <div class="small-12 medium-6 column">
+        <strong><%= t("admin.shared.author") %></strong><br>
+        <%= preview.proposal.author&.username || '-' %>
+      </div>
+      <div class="small-12 medium-6 column">
+        <strong><%= t("admin.shared.created_at") %></strong><br>
+        <%= l(preview.created_at, format: :datetime) %>
+      </div>
+    </div>
+  </div>
+
+  <div class="row">
+    <div class="column">
+      <strong><%= t("admin.shared.content") %></strong>
+      <p class="help-text" id="phase-description-help-text">
+        <%= preview.body %>
+      </p>
+    </div>
+  </div>
+<% end %>
diff --git a/config/locales/en/admin.yml b/config/locales/en/admin.yml
index ea01f35d6..a2194110b 100644
--- a/config/locales/en/admin.yml
+++ b/config/locales/en/admin.yml
@@ -651,9 +651,14 @@ en:
         sent_guide: "This is how the users see the notification:"
         send_alert: Are you sure you want to send this notification to %{n} users?
     system_emails:
+      preview_pending:
+        action: Preview Pending
+        preview_of: Preview of %{name}
+        pending_to_be_sent: This is the content pending to be sent
       proposal_notification_digest:
         title: Proposal Notification Digest
         description: Gathers all proposal notifications for an user in a single message, to avoid too much emails.
+        preview_detail: Users will only recieve notifications from the proposals they are following
     emails_download:
       index:
         title: Emails download
@@ -1051,7 +1056,10 @@ en:
       show_image: Show image
       moderated_content: "Check the content moderated by the moderators, and confirm if the moderation has been done correctly."
       view: View
-      preview: Preview
+      proposal: Proposal
+      author: Author
+      content: Content
+      created_at: Created at
     spending_proposals:
       index:
         geozone_filter_all: All zones
diff --git a/config/locales/es/admin.yml b/config/locales/es/admin.yml
index 62e806ffb..2d652e8e2 100644
--- a/config/locales/es/admin.yml
+++ b/config/locales/es/admin.yml
@@ -652,9 +652,14 @@ es:
         sent_guide: "Así es como los usuarios ven la notificación:"
         send_alert: ¿Estás seguro/a de que quieres enviar esta notificación a %{n} usuarios?
     system_emails:
+      preview_pending:
+        action: Previsualizar Pendientes
+        preview_of: Vista previa de %{name}
+        pending_to_be_sent: Este es todo el contenido pendiente de enviar
       proposal_notification_digest:
         title: Resumen de Notificationes de Propuestas
         description: Reune todas las notificaciones de propuestas en un único mensaje, para evitar demasiados emails.
+        preview_detail: Los usuarios sólo recibirán las notificaciones de aquellas propuestas que siguen.
     emails_download:
       index:
         title: Descarga de emails
@@ -1052,7 +1057,10 @@ es:
       show_image: Mostrar imagen
       moderated_content: "Revisa el contenido moderado por los moderadores, y confirma si la moderación se ha realizado correctamente."
       view: Ver
-      preview: Previsualizar
+      proposal: Propuesta
+      author: Autor
+      content: Contenido
+      created_at: Fecha de creación
     spending_proposals:
       index:
         geozone_filter_all: Todos los ámbitos de actuación
diff --git a/config/routes/admin.rb b/config/routes/admin.rb
index 2fe805593..150d1b28a 100644
--- a/config/routes/admin.rb
+++ b/config/routes/admin.rb
@@ -167,6 +167,7 @@ namespace :admin do
 
   resources :system_emails, only: [:index] do
     get :view
+    get :preview_pending
   end
 
   resources :emails_download, only: :index do
diff --git a/spec/features/admin/system_emails_spec.rb b/spec/features/admin/system_emails_spec.rb
index ddd812236..634a32efb 100644
--- a/spec/features/admin/system_emails_spec.rb
+++ b/spec/features/admin/system_emails_spec.rb
@@ -40,4 +40,29 @@ feature "System Emails" do
     end
   end
 
+  context "Preview Pending" do
+    scenario "#proposal_notification_digest" do
+      proposal_a = create(:proposal, title: 'Proposal A')
+      proposal_b = create(:proposal, title: 'Proposal B')
+      proposal_notification_a = create(:proposal_notification, proposal: proposal_a,
+                                                               title: 'Proposal A Title',
+                                                               body: 'Proposal A Notification Body')
+      proposal_notification_b = create(:proposal_notification, proposal: proposal_b,
+                                                               title: 'Proposal B Title',
+                                                               body: 'Proposal B Notification Body')
+      create(:notification, notifiable: proposal_notification_a, emailed_at: nil)
+      create(:notification, notifiable: proposal_notification_b, emailed_at: nil)
+
+      visit admin_system_email_preview_pending_path('proposal_notification_digest')
+
+      expect(page).to have_content('This is the content pending to be sent')
+      expect(page).to have_link('Proposal A', href: proposal_url(proposal_a))
+      expect(page).to have_link('Proposal B', href: proposal_url(proposal_b))
+      expect(page).to have_link('Proposal A Title', href: proposal_url(proposal_a,
+                                                    anchor: 'tab-notifications'))
+      expect(page).to have_link('Proposal B Title', href: proposal_url(proposal_b,
+                                                    anchor: 'tab-notifications'))
+    end
+  end
+
 end