diff --git a/src/content/docs/cloudflare-one/email-security/detection-settings/configure-text-add-ons.mdx b/src/content/docs/cloudflare-one/email-security/detection-settings/configure-text-add-ons.mdx
index fe0cc59a3642c44..635cce8c80e42a3 100644
--- a/src/content/docs/cloudflare-one/email-security/detection-settings/configure-text-add-ons.mdx
+++ b/src/content/docs/cloudflare-one/email-security/detection-settings/configure-text-add-ons.mdx
@@ -7,6 +7,10 @@ sidebar:
 
 You can create custom labels to be used as the subject or body prefix for emails with specific dispositions.
 
+:::caution
+If you currently do not have text add-ons enabled, configuring text add-ons will add a banner to the subject line. As a result, the subject line and the email body will be reduced.
+:::
+
 ## Subject prefix
 
 To configure a subject prefix: