diff --git a/src/sandstorm/config.c++ b/src/sandstorm/config.c++
index d7d037809..cfbc9b047 100644
--- a/src/sandstorm/config.c++
+++ b/src/sandstorm/config.c++
@@ -241,6 +241,8 @@ Config readConfig(const char *path, bool parseUids) {
       config.allowDemoAccounts = value == "true" || value == "yes";
     } else if (key == "ALLOW_DEV_ACCOUNTS") {
       config.allowDevAccounts = value == "true" || value == "yes";
+    } else if (key == "ALLOW_UNINVITED") {
+      config.allowUninvited = value == "true" || value == "yes";
     } else if (key == "IS_TESTING") {
       config.isTesting = value == "true" || value == "yes";
     } else if (key == "HIDE_TROUBLESHOOTING") {
diff --git a/src/sandstorm/config.h b/src/sandstorm/config.h
index 38e64d169..c70b0bd74 100644
--- a/src/sandstorm/config.h
+++ b/src/sandstorm/config.h
@@ -25,6 +25,7 @@ struct Config {
   kj::String sandcatsHostname = nullptr;
   bool allowDemoAccounts = false;
   bool isTesting = false;
+  bool allowUninvited = false;
   bool allowDevAccounts = false;
   bool hideTroubleshooting = false;
   uint smtpListenPort = 30025;
diff --git a/src/sandstorm/run-bundle.c++ b/src/sandstorm/run-bundle.c++
index 5472f40e9..10b4853ed 100644
--- a/src/sandstorm/run-bundle.c++
+++ b/src/sandstorm/run-bundle.c++
@@ -2659,6 +2659,7 @@ private:
           "{ \"build\":", buildstamp,
           ", \"allowDemoAccounts\":", config.allowDemoAccounts ? "true" : "false",
           ", \"allowDevAccounts\":", config.allowDevAccounts ? "true" : "false",
+          ", \"allowUninvited\":", config.allowUninvited ? "true" : "false",
           ", \"isTesting\":", config.isTesting ? "true" : "false",
           ", \"hideTroubleshooting\":", config.hideTroubleshooting ? "true" : "false",
           ", \"wildcardHost\":\"", config.wildcardHost, "\"",
diff --git a/tests/run-local.sh b/tests/run-local.sh
index 7bd574e11..9661873f4 100755
--- a/tests/run-local.sh
+++ b/tests/run-local.sh
@@ -138,6 +138,7 @@ rm -rf "$SANDSTORM_DIR"
 
 echo "IS_TESTING=true
 ALLOW_DEMO_ACCOUNTS=true
+ALLOW_UNINVITED=true
 BASE_URL=http://local.sandstorm.io:$PORT
 WILDCARD_HOST=*.local.sandstorm.io:$PORT
 PORT=$PORT