diff --git a/apps/dav/appinfo/info.xml b/apps/dav/appinfo/info.xml
index 9b500c9f300..0f97289ba37 100644
--- a/apps/dav/appinfo/info.xml
+++ b/apps/dav/appinfo/info.xml
@@ -5,7 +5,7 @@
 	<description>WebDAV endpoint</description>
 	<licence>AGPL</licence>
 	<author>owncloud.org</author>
-	<version>1.4.4</version>
+	<version>1.4.5</version>
 	<default_enable/>
 	<types>
 		<filesystem/>
@@ -52,4 +52,8 @@
 			<provider>OCA\DAV\CalDAV\Activity\Provider\Todo</provider>
 		</providers>
 	</activity>
+
+	<settings>
+		<admin>OCA\DAV\Settings\CalDAVSettings</admin>
+	</settings>
 </info>
diff --git a/apps/dav/appinfo/v1/caldav.php b/apps/dav/appinfo/v1/caldav.php
index b005ec2fcb8..a103f82a420 100644
--- a/apps/dav/appinfo/v1/caldav.php
+++ b/apps/dav/appinfo/v1/caldav.php
@@ -52,6 +52,7 @@ $dispatcher = \OC::$server->getEventDispatcher();
 $calDavBackend = new CalDavBackend($db, $principalBackend, $userManager, \OC::$server->getGroupManager(), $random, $dispatcher, true);
 
 $debugging = \OC::$server->getConfig()->getSystemValue('debug', false);
+$sendInvitations = \OC::$server->getConfig()->getAppValue('dav', 'sendInvitations', 'yes') === 'yes';
 
 // Root nodes
 $principalCollection = new \Sabre\CalDAV\Principal\Collection($principalBackend);
@@ -84,7 +85,11 @@ if ($debugging) {
 $server->addPlugin(new \Sabre\DAV\Sync\Plugin());
 $server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
 $server->addPlugin(new \OCA\DAV\CalDAV\Schedule\Plugin());
-$server->addPlugin(new \OCA\DAV\CalDAV\Schedule\IMipPlugin( \OC::$server->getMailer(), \OC::$server->getLogger(), new \OC\AppFramework\Utility\TimeFactory()));
+
+if ($sendInvitations) {
+	$server->addPlugin(new \OCA\DAV\CalDAV\Schedule\IMipPlugin( \OC::$server->getMailer(), \OC::$server->getLogger(), new \OC\AppFramework\Utility\TimeFactory()));
+}
+
 $server->addPlugin(new ExceptionLoggerPlugin('caldav', \OC::$server->getLogger()));
 
 // And off we go!
diff --git a/apps/dav/js/settings-admin-caldav.js b/apps/dav/js/settings-admin-caldav.js
new file mode 100644
index 00000000000..10eb89ab61d
--- /dev/null
+++ b/apps/dav/js/settings-admin-caldav.js
@@ -0,0 +1,28 @@
+/**
+ * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+"use strict";
+
+$('#caldavSendInvitations').change(function() {
+	var val = $(this)[0].checked;
+
+	OCP.AppConfig.setValue('dav', 'sendInvitations', val ? 'yes' : 'no');
+});
diff --git a/apps/dav/lib/Server.php b/apps/dav/lib/Server.php
index 162833951a3..719e4974755 100644
--- a/apps/dav/lib/Server.php
+++ b/apps/dav/lib/Server.php
@@ -76,6 +76,7 @@ class Server {
 		$mailer = \OC::$server->getMailer();
 		$dispatcher = \OC::$server->getEventDispatcher();
 		$timezone = new TimeFactory();
+		$sendInvitations = \OC::$server->getConfig()->getAppValue('dav', 'sendInvitations', 'yes') === 'yes';
 
 		$root = new RootCollection();
 		$this->server = new \OCA\DAV\Connector\Sabre\Server(new CachingTree($root));
@@ -137,7 +138,9 @@ class Server {
 		$this->server->addPlugin(new \OCA\DAV\CalDAV\Plugin());
 		$this->server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
 		$this->server->addPlugin(new \OCA\DAV\CalDAV\Schedule\Plugin());
-		$this->server->addPlugin(new IMipPlugin($mailer, $logger, $timezone));
+		if ($sendInvitations) {
+			$this->server->addPlugin(new IMipPlugin($mailer, $logger, $timezone));
+		}
 		$this->server->addPlugin(new \Sabre\CalDAV\Subscriptions\Plugin());
 		$this->server->addPlugin(new \Sabre\CalDAV\Notifications\Plugin());
 		$this->server->addPlugin(new DAV\Sharing\Plugin($authBackend, \OC::$server->getRequest()));
diff --git a/apps/dav/lib/Settings/CalDAVSettings.php b/apps/dav/lib/Settings/CalDAVSettings.php
new file mode 100644
index 00000000000..1c85d19432c
--- /dev/null
+++ b/apps/dav/lib/Settings/CalDAVSettings.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\DAV\Settings;
+
+use OCP\AppFramework\Http\TemplateResponse;
+use OCP\IConfig;
+use OCP\Settings\ISettings;
+
+class CalDAVSettings implements ISettings {
+
+	/** @var IConfig */
+	private $config;
+
+	/**
+	 * CalDAVSettings constructor.
+	 *
+	 * @param IConfig $config
+	 */
+	public function __construct(IConfig $config) {
+		$this->config = $config;
+	}
+
+	/**
+	 * @return TemplateResponse
+	 */
+	public function getForm() {
+		$parameters = [
+			'send_invitations' => $this->config->getAppValue('dav', 'sendInvitations', 'yes'),
+		];
+
+		return new TemplateResponse('dav', 'settings-admin-caldav', $parameters);
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getSection() {
+		return 'additional';
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getPriority() {
+		return 20;
+	}
+}
diff --git a/apps/dav/templates/settings-admin-caldav.php b/apps/dav/templates/settings-admin-caldav.php
new file mode 100644
index 00000000000..34d3517e8d9
--- /dev/null
+++ b/apps/dav/templates/settings-admin-caldav.php
@@ -0,0 +1,40 @@
+<?php
+/**
+ * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+script('dav', [
+	'settings-admin-caldav'
+]);
+
+/** @var \OCP\IL10N $l */
+/** @var array $_ */
+?>
+<form id="CalDAV" class="section">
+	<h2><?php p($l->t('CalDAV server')); ?></h2>
+	<p>
+		<input type="checkbox" name="caldav_send_invitations" id="caldavSendInvitations" class="checkbox"
+			<?php ($_['send_invitations'] === 'yes') ? print_unescaped('checked="checked"') : null ?>/>
+		<label for="caldavSendInvitations"><?php p($l->t('Send invitations to attendees')); ?></label>
+		<br>
+		<em><?php p($l->t('Please make sure to properly setup the email settings above.')); ?></em>
+	</p>
+</form>
diff --git a/apps/dav/tests/unit/Settings/CalDAVSettingsTest.php b/apps/dav/tests/unit/Settings/CalDAVSettingsTest.php
new file mode 100644
index 00000000000..8ee58107487
--- /dev/null
+++ b/apps/dav/tests/unit/Settings/CalDAVSettingsTest.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\DAV\Tests\Unit\DAV\Settings;
+
+use OCA\DAV\Settings\CalDAVSettings;
+use OCP\IConfig;
+use Test\TestCase;
+
+class CalDAVSettingsTest extends TestCase {
+
+	/** @var IConfig|\PHPUnit_Framework_MockObject_MockObject */
+	private $config;
+
+	/** @var CalDAVSettings */
+	private $settings;
+
+	public function setUp() {
+		parent::setUp();
+
+		$this->config = $this->createMock(IConfig::class);
+		$this->settings = new CalDAVSettings($this->config);
+	}
+
+	public function testGetForm() {
+		$result = $this->settings->getForm();
+
+		$this->assertInstanceOf('OCP\AppFramework\Http\TemplateResponse', $result);
+	}
+
+	public function testGetSection() {
+		$this->assertEquals('additional', $this->settings->getSection());
+	}
+
+	public function testGetPriority() {
+		$this->assertEquals(20, $this->settings->getPriority());
+	}
+}