diff --git a/hc/api/models.py b/hc/api/models.py
index 40b9b76a..f4d9b37d 100644
--- a/hc/api/models.py
+++ b/hc/api/models.py
@@ -204,6 +204,9 @@ class Channel(models.Model):
                 "html": 1,
                 "priority": priority,
             }
+            if priority == 2:  # Emergency notification
+                payload["retry"] = settings.PUSHOVER_EMERGENCY_RETRY_DELAY
+                payload["expire"] = settings.PUSHOVER_EMERGENCY_EXPIRATION
 
             url = "https://api.pushover.net/1/messages.json"
             r = requests.post(url, data=payload, timeout=5)
diff --git a/hc/front/views.py b/hc/front/views.py
index a1485733..a56bfdfe 100644
--- a/hc/front/views.py
+++ b/hc/front/views.py
@@ -377,5 +377,9 @@ def add_pushover(request):
             })
 
     else:
-        ctx = {"page": "channels"}
+        ctx = {
+            "page": "channels",
+            "po_retry_delay": td(seconds=settings.PUSHOVER_EMERGENCY_RETRY_DELAY),
+            "po_expiration": td(seconds=settings.PUSHOVER_EMERGENCY_EXPIRATION),
+        }
         return render(request, "integrations/add_pushover.html", ctx)
diff --git a/hc/settings.py b/hc/settings.py
index 24301ed6..2e0b805a 100644
--- a/hc/settings.py
+++ b/hc/settings.py
@@ -128,6 +128,8 @@ EMAIL_BACKEND = "djmail.backends.default.EmailBackend"
 # Pushover integration -- override these in local_settings
 PUSHOVER_API_TOKEN = None
 PUSHOVER_SUBSCRIPTION_URL = None
+PUSHOVER_EMERGENCY_RETRY_DELAY = 300
+PUSHOVER_EMERGENCY_EXPIRATION = 86400
 
 try:
     from .local_settings import *
diff --git a/templates/integrations/add_pushover.html b/templates/integrations/add_pushover.html
index 80bfd463..a2bb367b 100644
--- a/templates/integrations/add_pushover.html
+++ b/templates/integrations/add_pushover.html
@@ -26,6 +26,14 @@
                     <option value="-1">Low</option>
                     <option value="0" selected>Normal</option>
                     <option value="1">High</option>
+                    <option value="2"
+                            data-toggle="tooltip" data-placement="right"
+                            title="Emergency notifications will be repeated every
+                                   {{po_retry_delay|hc_duration }} for at most
+                                   {{ po_expiration|hc_duration }} until you
+                                   acknowledge them.">
+                        Emergency
+                    </option>
                 </select>
             </div>
         </div>
@@ -47,4 +55,7 @@
 <script src="{% static 'js/jquery-2.1.4.min.js' %}"></script>
 <script src="{% static 'js/bootstrap.min.js' %}"></script>
 {% endcompress %}
+<script>$(function() {
+    $('[data-toggle="tooltip"]').tooltip({container: 'body'});
+})</script>
 {% endblock %}