diff --git a/alertmanager/manager.go b/alertmanager/manager.go
index 4b1e654c..1b9f9c99 100644
--- a/alertmanager/manager.go
+++ b/alertmanager/manager.go
@@ -54,6 +54,15 @@ func DefaultContactPoint(contactPoint string) Option {
 	}
 }
 
+// Templates defines templates that can be used when sending messages to
+// contact points.
+// See https://prometheus.io/blog/2016/03/03/custom-alertmanager-templates/
+func Templates(templates map[string]string) Option {
+	return func(manager *Manager) {
+		manager.builder.TemplateFiles = templates
+	}
+}
+
 // Routing configures the routing policies to apply on alerts.
 func Routing(policies ...RoutingPolicy) Option {
 	return func(manager *Manager) {
diff --git a/alertmanager/manager_test.go b/alertmanager/manager_test.go
index 77ff31a0..4e3438d2 100644
--- a/alertmanager/manager_test.go
+++ b/alertmanager/manager_test.go
@@ -3,6 +3,7 @@ package alertmanager
 import (
 	"testing"
 
+	"github.com/K-Phoen/sdk"
 	"github.com/stretchr/testify/require"
 )
 
@@ -61,6 +62,20 @@ func TestRouting(t *testing.T) {
 	req.Len(manager.builder.Config.Route.Routes, 1)
 }
 
+func TestTemplates(t *testing.T) {
+	req := require.New(t)
+
+	manager := New(
+		Templates(map[string]string{
+			"custom_template": "lala",
+		}),
+	)
+
+	req.Equal(sdk.MessageTemplate{
+		"custom_template": "lala",
+	}, manager.builder.TemplateFiles)
+}
+
 func TestMarshalJSON(t *testing.T) {
 	req := require.New(t)