diff --git a/common/alerting-message/inputs.tf b/common/alerting-message/inputs.tf
index c819f96..f20bef7 100644
--- a/common/alerting-message/inputs.tf
+++ b/common/alerting-message/inputs.tf
@@ -5,3 +5,13 @@ variable "oncall_24x7" {
 variable "oncall_office_hours" {
   type = "string"
 }
+
+variable "prepend_text" {
+  type    = "string"
+  default = ""
+}
+
+variable "append_text" {
+  type    = "string"
+  default = ""
+}
diff --git a/common/alerting-message/main.tf b/common/alerting-message/main.tf
index abb3cc3..3b3c84b 100644
--- a/common/alerting-message/main.tf
+++ b/common/alerting-message/main.tf
@@ -1,9 +1,11 @@
 data "template_file" "alerting-message" {
   template = <<EOF
+$${prepend_text}
 {{#is_alert}}$${oncall_24x7}{{/is_alert}}
 {{#is_recovery}}$${oncall_24x7}{{/is_recovery}}
 {{#is_warning}}$${oncall_office_hours}{{/is_warning}}
 {{#is_warning_recovery}}$${oncall_office_hours}{{/is_warning_recovery}}
+$${append_text}
 EOF
 
   vars {