diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3db5d2d7..85be1a2d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ All notable changes to this project will be documented in this file.
 - Add rate limiting for Pushover notifications (6 notifications / user / minute)
 - Add the WEBHOOKS_ENABLED setting (#471)
 - Add the SLACK_ENABLED setting (#471)
+- Add the MATTERMOST_ENABLED setting (#471)
 
 ## Bug Fixes
 - Fix unwanted HTML escaping in SMS and WhatsApp notifications
diff --git a/docker/.env b/docker/.env
index adf2e164..1d0310d7 100644
--- a/docker/.env
+++ b/docker/.env
@@ -25,6 +25,7 @@ MASTER_BADGE_LABEL=Mychecks
 MATRIX_ACCESS_TOKEN=
 MATRIX_HOMESERVER=
 MATRIX_USER_ID=
+MATTERMOST_ENABLED=True
 PD_VENDOR_KEY=
 PING_BODY_LIMIT=10000
 PING_EMAIL_DOMAIN=localhost
diff --git a/hc/api/tests/test_notify_mattermost.py b/hc/api/tests/test_notify_mattermost.py
new file mode 100644
index 00000000..bb49903d
--- /dev/null
+++ b/hc/api/tests/test_notify_mattermost.py
@@ -0,0 +1,31 @@
+# coding: utf-8
+
+from datetime import timedelta as td
+
+from django.utils.timezone import now
+from hc.api.models import Channel, Check, Notification
+from hc.test import BaseTestCase
+from django.test.utils import override_settings
+
+
+class NotifyTestCase(BaseTestCase):
+    def _setup_data(self, value, status="down", email_verified=True):
+        self.check = Check(project=self.project)
+        self.check.status = status
+        self.check.last_ping = now() - td(minutes=61)
+        self.check.save()
+
+        self.channel = Channel(project=self.project)
+        self.channel.kind = "mattermost"
+        self.channel.value = value
+        self.channel.email_verified = email_verified
+        self.channel.save()
+        self.channel.checks.add(self.check)
+
+    @override_settings(MATTERMOST_ENABLED=False)
+    def test_it_requires_mattermost_enabled(self):
+        self._setup_data("123")
+        self.channel.notify(self.check)
+
+        n = Notification.objects.get()
+        self.assertEqual(n.error, "Mattermost notifications are not enabled.")
diff --git a/hc/api/transports.py b/hc/api/transports.py
index 39826256..e93b968d 100644
--- a/hc/api/transports.py
+++ b/hc/api/transports.py
@@ -263,9 +263,12 @@ class Webhook(HttpTransport):
 
 class Slack(HttpTransport):
     def notify(self, check):
-        if not settings.SLACK_ENABLED:
+        if self.channel.kind == "slack" and not settings.SLACK_ENABLED:
             return "Slack notifications are not enabled."
 
+        if self.channel.kind == "mattermost" and not settings.MATTERMOST_ENABLED:
+            return "Mattermost notifications are not enabled."
+
         text = tmpl("slack_message.json", check=check)
         payload = json.loads(text)
         return self.post(self.channel.slack_webhook_url, json=payload)
diff --git a/hc/front/tests/test_add_mattermost.py b/hc/front/tests/test_add_mattermost.py
index 7b04e98e..842e3c7f 100644
--- a/hc/front/tests/test_add_mattermost.py
+++ b/hc/front/tests/test_add_mattermost.py
@@ -1,3 +1,4 @@
+from django.test.utils import override_settings
 from hc.api.models import Channel
 from hc.test import BaseTestCase
 
@@ -31,3 +32,9 @@ class AddMattermostTestCase(BaseTestCase):
         self.client.login(username="bob@example.org", password="password")
         r = self.client.get(self.url)
         self.assertEqual(r.status_code, 403)
+
+    @override_settings(MATTERMOST_ENABLED=False)
+    def test_it_handles_disabled_integration(self):
+        self.client.login(username="alice@example.org", password="password")
+        r = self.client.get(self.url)
+        self.assertEqual(r.status_code, 404)
diff --git a/hc/front/views.py b/hc/front/views.py
index 9b6b9171..7a301654 100644
--- a/hc/front/views.py
+++ b/hc/front/views.py
@@ -295,6 +295,7 @@ def index(request):
         "enable_discord": settings.DISCORD_CLIENT_ID is not None,
         "enable_linenotify": settings.LINENOTIFY_CLIENT_ID is not None,
         "enable_matrix": settings.MATRIX_ACCESS_TOKEN is not None,
+        "enable_mattermost": settings.MATTERMOST_ENABLED is True,
         "enable_pdc": settings.PD_VENDOR_KEY is not None,
         "enable_pushbullet": settings.PUSHBULLET_CLIENT_ID is not None,
         "enable_pushover": settings.PUSHOVER_API_TOKEN is not None,
@@ -763,6 +764,7 @@ def channels(request, code):
         "enable_discord": settings.DISCORD_CLIENT_ID is not None,
         "enable_linenotify": settings.LINENOTIFY_CLIENT_ID is not None,
         "enable_matrix": settings.MATRIX_ACCESS_TOKEN is not None,
+        "enable_mattermost": settings.MATTERMOST_ENABLED is True,
         "enable_pdc": settings.PD_VENDOR_KEY is not None,
         "enable_pushbullet": settings.PUSHBULLET_CLIENT_ID is not None,
         "enable_pushover": settings.PUSHOVER_API_TOKEN is not None,
@@ -1210,6 +1212,7 @@ def add_slack_complete(request):
     return redirect("hc-channels", project.code)
 
 
+@require_setting("MATTERMOST_ENABLED")
 @login_required
 def add_mattermost(request, code):
     project = _get_rw_project_for_user(request, code)
diff --git a/hc/settings.py b/hc/settings.py
index 4d053aba..65e00961 100644
--- a/hc/settings.py
+++ b/hc/settings.py
@@ -199,6 +199,9 @@ MATRIX_HOMESERVER = os.getenv("MATRIX_HOMESERVER")
 MATRIX_USER_ID = os.getenv("MATRIX_USER_ID")
 MATRIX_ACCESS_TOKEN = os.getenv("MATRIX_ACCESS_TOKEN")
 
+# Mattermost
+MATTERMOST_ENABLED = envbool("MATTERMOST_ENABLED", "True")
+
 # PagerDuty
 PD_VENDOR_KEY = os.getenv("PD_VENDOR_KEY")
 
diff --git a/templates/docs/self_hosted_configuration.html b/templates/docs/self_hosted_configuration.html
index c8249f85..3ac83246 100644
--- a/templates/docs/self_hosted_configuration.html
+++ b/templates/docs/self_hosted_configuration.html
@@ -140,6 +140,9 @@ integration.</p>
 <h2 id="MATRIX_USER_ID"><code>MATRIX_USER_ID</code></h2>
 <p>Default: <code>None</code></p>
 <p>The Matrix bot's user identifier, required by the Matrix integration.</p>
+<h2 id="MATTERMOST_ENABLED"><code>MATTERMOST_ENABLED</code></h2>
+<p>Default: <code>True</code></p>
+<p>A boolean that turns on/off the Mattermost integration. Enabled by default.</p>
 <h2 id="PD_VENDOR_KEY"><code>PD_VENDOR_KEY</code></h2>
 <p>Default: <code>None</code></p>
 <p><a href="https://www.pagerduty.com/">PagerDuty</a> vendor key,
@@ -284,7 +287,7 @@ and create a <em>Slack app</em>. When setting up the Slack app, make sure to:</p
 </ul>
 <h2 id="SLACK_CLIENT_SECRET"><code>SLACK_CLIENT_SECRET</code></h2>
 <p>Default: <code>None</code></p>
-<p>The Slack Client Secret, required if <code>SLACK_CLIENT_ID</code> is set.
+<p>The Slack Client Secret. Required if <code>SLACK_CLIENT_ID</code> is set.
 Look it up at <a href="https://api.slack.com/apps/">https://api.slack.com/apps/</a>.</p>
 <h2 id="SLACK_ENABLED"><code>SLACK_ENABLED</code></h2>
 <p>Default: <code>True</code></p>
diff --git a/templates/docs/self_hosted_configuration.md b/templates/docs/self_hosted_configuration.md
index 722e6d43..cc66d165 100644
--- a/templates/docs/self_hosted_configuration.md
+++ b/templates/docs/self_hosted_configuration.md
@@ -230,6 +230,12 @@ Default: `None`
 
 The Matrix bot's user identifier, required by the Matrix integration.
 
+## `MATTERMOST_ENABLED` {: #MATTERMOST_ENABLED }
+
+Default: `True`
+
+A boolean that turns on/off the Mattermost integration. Enabled by default.
+
 ## `PD_VENDOR_KEY` {: #PD_VENDOR_KEY }
 
 Default: `None`
diff --git a/templates/front/channels.html b/templates/front/channels.html
index b3497a94..fa32c652 100644
--- a/templates/front/channels.html
+++ b/templates/front/channels.html
@@ -265,6 +265,7 @@
         </li>
         {% endif %}
 
+        {% if enable_mattermost %}
         <li>
             <img src="{% static 'img/integrations/mattermost.png' %}"
                 class="icon" alt="Mattermost icon" />
@@ -273,6 +274,7 @@
             <p>High Trust Messaging for the Enterprise.</p>
             <a href="{% url 'hc-add-mattermost' project.code %}" class="btn btn-primary">Add Integration</a>
         </li>
+        {% endif %}
 
         <li>
             <img src="{% static 'img/integrations/msteams.png' %}"
diff --git a/templates/front/welcome.html b/templates/front/welcome.html
index ea3f5cbb..6f067f45 100644
--- a/templates/front/welcome.html
+++ b/templates/front/welcome.html
@@ -460,6 +460,7 @@
         </div>
         {% endif %}
 
+        {% if enable_mattermost %}
         <div class="col-lg-2 col-md-3 col-sm-4 col-xs-6">
             <div class="integration">
                 <img src="{% static 'img/integrations/mattermost.png' %}" class="icon" alt="" />
@@ -469,6 +470,7 @@
                 </h3>
             </div>
         </div>
+        {% endif %}
 
         <div class="col-lg-2 col-md-3 col-sm-4 col-xs-6">
             <div class="integration">