diff --git a/docs/INSTALL-email.md b/docs/INSTALL-email.md
index 1686b2fc158..36a403e1c87 100644
--- a/docs/INSTALL-email.md
+++ b/docs/INSTALL-email.md
@@ -1,3 +1,6 @@
+> # Warning: This Guide is Deprecated
+> We only support Docker based installs now. Please see [our **official install guide**](https://github.com/discourse/discourse/blob/master/docs/INSTALL.md) for supported install instructions.
+
 # Discourse Mail Setup Guide
 
 After following INSTALL-ubuntu.md your mailer settings should still be set.