diff --git a/engine/apps/alerts/incident_appearance/templaters/web_templater.py b/engine/apps/alerts/incident_appearance/templaters/web_templater.py
index 2598ca0d..9902a9aa 100644
--- a/engine/apps/alerts/incident_appearance/templaters/web_templater.py
+++ b/engine/apps/alerts/incident_appearance/templaters/web_templater.py
@@ -15,7 +15,7 @@ class AlertWebTemplater(AlertTemplater):
         if templated_alert.title:
             templated_alert.title = escape_html(self._slack_format_for_web(templated_alert.title))
         if templated_alert.message:
-            message = escape_html(self._slack_format_for_web(templated_alert.message))
+            message = self._slack_format_for_web(templated_alert.message)
             link_matches = re.findall(url_re, message)
             for idx, link in enumerate(link_matches):
                 substitution = f"oncallsubstitutedlink{idx}marker"
diff --git a/engine/apps/alerts/tests/test_alert_group_renderer.py b/engine/apps/alerts/tests/test_alert_group_renderer.py
index 8cc1249e..2521f8a8 100644
--- a/engine/apps/alerts/tests/test_alert_group_renderer.py
+++ b/engine/apps/alerts/tests/test_alert_group_renderer.py
@@ -55,6 +55,50 @@ def test_render_web_alert_links(
     )
 
 
+@pytest.mark.parametrize(
+    "message, expected_result",
+    [
+        (
+            '<a href="https://www.google.com">google</a>',
+            '<p><a href="https://www.google.com" rel="nofollow noopener" target="_blank">google</a> </p>',
+        ),
+        (
+            '<a href="http://www.google.com">google</a>',
+            '<p><a href="http://www.google.com" rel="nofollow noopener" target="_blank">google</a> </p>',
+        ),
+        (
+            '<a href="//www.google.com">google</a>',
+            '<p><a href="//www.google.com" rel="nofollow noopener" target="_blank">google</a> </p>',
+        ),
+        ("http://www.google.com/", '<p><a href="http://www.google.com/">http://www.google.com/</a> </p>'),
+        (
+            "[Hello](http://www.google.com)",
+            '<p><a href="http://www.google.com" rel="nofollow noopener" target="_blank">Hello</a> </p>',
+        ),
+    ],
+)
+@pytest.mark.django_db
+def test_render_web_postformat_html_a_links(
+    make_organization_and_user_with_slack_identities,
+    make_alert_receive_channel,
+    make_alert_group,
+    make_alert,
+    message,
+    expected_result,
+):
+    organization, _, _, _ = make_organization_and_user_with_slack_identities()
+    alert_receive_channel = make_alert_receive_channel(
+        organization,
+    )
+    alert_group = make_alert_group(alert_receive_channel)
+
+    alert = make_alert(alert_group=alert_group, raw_request_data={"message": message})
+
+    templater = AlertWebTemplater(alert)
+    templated_alert = templater.render()
+    assert templated_alert.message == expected_result
+
+
 @pytest.mark.django_db
 def test_getattr_template(
     make_organization_and_user_with_slack_identities,