diff --git a/lib/icinga/externalcommandprocessor.cpp b/lib/icinga/externalcommandprocessor.cpp
index 7a2b4834b..41532ac83 100644
--- a/lib/icinga/externalcommandprocessor.cpp
+++ b/lib/icinga/externalcommandprocessor.cpp
@@ -1104,11 +1104,19 @@ void ExternalCommandProcessor::SendCustomHostNotification(double, const std::vec
 		BOOST_THROW_EXCEPTION(std::invalid_argument("Expected 4 arguments."));
 
 	Host::Ptr host = Host::GetByName(arguments[0]);
+	int options = Convert::ToLong(arguments[1]);
 
 	Log(LogInformation, "icinga", "Sending custom notification for host " + host->GetName());
 	Service::Ptr service = host->GetHostCheckService();
-	if (service)
+	if (service) {
+		if (options & 2) {
+			ObjectLock olock(service);
+			service->SetForceNextNotification(true);
+			service->Flush();
+		}
+
 		service->RequestNotifications(NotificationCustom, service->GetLastCheckResult());
+	}
 }
 
 void ExternalCommandProcessor::SendCustomSvcNotification(double, const std::vector<String>& arguments)
@@ -1117,8 +1125,16 @@ void ExternalCommandProcessor::SendCustomSvcNotification(double, const std::vect
 		BOOST_THROW_EXCEPTION(std::invalid_argument("Expected 5 arguments."));
 
 	Service::Ptr service = Service::GetByNamePair(arguments[0], arguments[1]);
+	int options = Convert::ToLong(arguments[2]);
 
 	Log(LogInformation, "icinga", "Sending custom notification for service " + service->GetName());
+
+	if (options & 2) {
+		ObjectLock olock(service);
+		service->SetForceNextNotification(true);
+		service->Flush();
+	}
+
 	service->RequestNotifications(NotificationCustom, service->GetLastCheckResult());
 }
 
diff --git a/lib/icinga/service-notification.cpp b/lib/icinga/service-notification.cpp
index 8c169def2..2da027df4 100644
--- a/lib/icinga/service-notification.cpp
+++ b/lib/icinga/service-notification.cpp
@@ -61,8 +61,12 @@ void Service::RequestNotifications(NotificationType type, const Dictionary::Ptr&
 void Service::SendNotifications(NotificationType type, const Dictionary::Ptr& cr)
 {
 	if (!GetEnableNotifications()) {
-		Log(LogInformation, "icinga", "Notifications are disabled for service '" + GetName() + "'.");
-		return;
+		if (!GetForceNextNotification()) {
+			Log(LogInformation, "icinga", "Notifications are disabled for service '" + GetName() + "'.");
+			return;
+		}
+
+		SetForceNextNotification(false);
 	}
 
 	Log(LogInformation, "icinga", "Sending notifications for service '" + GetName() + "'");
@@ -309,3 +313,23 @@ void Service::SetEnableNotifications(bool enabled)
 	m_EnableNotifications = enabled;
 	Touch("enable_notifications");
 }
+
+/**
+ * @threadsafety Always.
+ */
+bool Service::GetForceNextNotification(void) const
+{
+	if (m_ForceNextNotification.IsEmpty())
+		return false;
+
+	return static_cast<bool>(m_ForceNextNotification);
+}
+
+/**
+ * @threadsafety Always.
+ */
+void Service::SetForceNextNotification(bool forced)
+{
+	m_ForceNextNotification = forced ? 1 : 0;
+	Touch("force_next_notification");
+}
diff --git a/lib/icinga/service.cpp b/lib/icinga/service.cpp
index c1cf433d5..d32a26883 100644
--- a/lib/icinga/service.cpp
+++ b/lib/icinga/service.cpp
@@ -75,6 +75,7 @@ Service::Service(const Dictionary::Ptr& serializedObject)
 	RegisterAttribute("downtimes", Attribute_Replicated, &m_Downtimes);
 
 	RegisterAttribute("enable_notifications", Attribute_Replicated, &m_EnableNotifications);
+	RegisterAttribute("force_next_notification", Attribute_Replicated, &m_ForceNextNotification);
 
 	SetSchedulingOffset(rand());
 }
diff --git a/lib/icinga/service.h b/lib/icinga/service.h
index 028d58cb5..d71cc84d1 100644
--- a/lib/icinga/service.h
+++ b/lib/icinga/service.h
@@ -233,6 +233,9 @@ public:
 
 	std::set<Notification::Ptr> GetNotifications(void) const;
 
+	void SetForceNextNotification(bool force);
+	bool GetForceNextNotification(void) const;
+
 	static void InvalidateNotificationsCache(void);
 
 	void UpdateSlaveNotifications(void);
@@ -305,6 +308,7 @@ private:
 
 	/* Notifications */
 	Attribute<bool> m_EnableNotifications;
+	Attribute<bool> m_ForceNextNotification;
 
 	static void RefreshNotificationsCache(void);
 };