Doesn't work, but close to what danapple has recommended

AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.android.email"
+    package="com.fsck.k9"
     android:versionCode="22"
     android:versionName="0.22"
     >

src/com/fsck/k9/K9.java

@@ -0,0 +1,4 @@
+package com.fsck;
+import com.android.email.Email;
+public class K9 extends Email {
+}