diff --git a/config.py b/config.py
index 3f8e0f7..7a44fac 100644
--- a/config.py
+++ b/config.py
@@ -67,7 +67,6 @@ with open(os.path.join(KEY_DIR, "me.yml")) as f:
     SUMMARY = conf["summary"]
     ICON_URL = conf["icon_url"]
     PASS = conf["pass"]
-    EXTRA_INBOXES = conf.get("extra_inboxes", [])
 
     HIDE_FOLLOWING = conf.get("hide_following", True)
 
diff --git a/core/activitypub.py b/core/activitypub.py
index 27af107..beeeffe 100644
--- a/core/activitypub.py
+++ b/core/activitypub.py
@@ -25,7 +25,6 @@ from little_boxes.httpsig import HTTPSigAuth
 from config import BASE_URL
 from config import DB
 from config import DEFAULT_CTX
-from config import EXTRA_INBOXES
 from config import ID
 from config import KEY
 from config import ME
@@ -276,9 +275,6 @@ class MicroblogPubBackend(Backend):
         """Setup a custom user agent."""
         return USER_AGENT
 
-    def extra_inboxes(self) -> List[str]:
-        return EXTRA_INBOXES
-
     def followers(self) -> List[str]:
         q = {
             "box": Box.INBOX.value,