diff --git a/config/mozilla.cfg b/config/mozilla.cfg
index 2709f2f..f7cbe72 100644
--- a/config/mozilla.cfg
+++ b/config/mozilla.cfg
@@ -820,6 +820,12 @@ defaultPref("keyword.enabled", false);
 // Enable Site Isolation
 // defaultPref("fission.autostart", true);
 // defaultPref("gfx.webrender.all", true);
+// -------------------------------------
+// Disable Relay email feature
+defaultPref("signon.firefoxRelay.feature", "disabled");
+// -------------------------------------
+// Disable Privacy-Preserving Attribution
+defaultPref("dom.private-attribution.submission.enabled", false);
 //
 // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 // OPTIONAL HARDENING