diff --git a/app/main.py b/app/main.py
index d28a1c1..71b5e86 100644
--- a/app/main.py
+++ b/app/main.py
@@ -200,6 +200,11 @@ MATRIX_HOMESERVER = os.environ.get("MATRIX_HOMESERVER", "https://matrix.inferenc
 MATRIX_BOT_TOKEN = os.environ.get("MATRIX_BOT_TOKEN", "")
 MATRIX_SPACE_ID = os.environ.get("MATRIX_SPACE_ID", "")
 MATRIX_GENERAL_ROOM = os.environ.get("MATRIX_GENERAL_ROOM", "")
+# Additional member-facing rooms that every member gets invited to (comma-separated
+# room IDs). Restricted rooms are NOT discoverable over federation until a member
+# has joined (the space hierarchy omits them for remote servers), so new rooms need
+# an explicit invite pass — either here or a one-off script.
+MATRIX_EXTRA_ROOMS = [r.strip() for r in os.environ.get("MATRIX_EXTRA_ROOMS", "").split(",") if r.strip()]
 LOOMIO_GROUP_ID = os.environ.get("LOOMIO_GROUP_ID", "")
 # Operator accounts that must always remain in the Loomio group (never removed
 # by the remove_absent reconciliation), comma-separated.
@@ -934,6 +939,8 @@ async def sync_matrix_space() -> dict:
             await invite(mxid, MATRIX_SPACE_ID)
             if MATRIX_GENERAL_ROOM:
                 await invite(mxid, MATRIX_GENERAL_ROOM)
+            for room in MATRIX_EXTRA_ROOMS:
+                await invite(mxid, room)
             invited_count += 1
         if invited_count:
             logger.info("Matrix space invites sent: %s", invited_count)