diff --git a/src/config.js b/src/config.js
index bd41c7d..4c32d59 100644
--- a/src/config.js
+++ b/src/config.js
@@ -49,4 +49,6 @@ export const cfg = {
   // experimmental - likely to change
   pg_redeem: process.env.PG_REDEEM == '1', // prime-gaming: redeem keys on external stores
   pg_claimdlc: process.env.PG_CLAIMDLC == '1', // prime-gaming: claim in-game content
+  // external stores
+  lg_email: process.env.LG_EMAIL || process.env.PG_EMAIL || process.env.EMAIL, // legacy-games: email to use for redeeming
 };