ISSUE-529 Update README with new ponymail-foal project reference
diff --git a/README.md b/README.md
index 5825596..c5d4316 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # Apache Pony Mail (Incubating)
+
+**Development on this project has shifted to [incubator-ponymail-foal](https://github.com/apache/incubator-ponymail-foal)**. This repository is now deprecated.
+
 <img src="https://github.com/apache/incubator-ponymail/blob/master/site/images/logo_large.png" align="left"/><br/><br/>
 Apache Pony Mail (Incubating) is a web-based mail archive browser
 licensed under the Apache License v/2.0 and built to scale