diff --git a/website/server/controllers/api-v3/members.js b/website/server/controllers/api-v3/members.js
index 61e0e3ec19..6f0ab6fe2d 100644
--- a/website/server/controllers/api-v3/members.js
+++ b/website/server/controllers/api-v3/members.js
@@ -510,6 +510,29 @@ api.sendPrivateMessage = {
   },
 };
 
+/**
+ * @api {post} /api/v3/members/toggle-private-messages-opt Opt-out / opt-in private messages
+ * @apiDescription Opt-out / opt-in private messaging functionality
+ * @apiName TogglePrivateMessagesOpt
+ * @apiGroup Member
+ *
+ * @apiSuccess {Object} data An empty Object
+ */
+api.togglePrivateMessagesOpt = {
+  method: 'POST',
+  url: '/members/toggle-private-messages-opt',
+  middlewares: [authWithHeaders()],
+  async handler (req, res) {
+    let user = res.locals.user;
+
+    user.inbox.optOut = !user.inbox.optOut;
+
+    await user.save();
+
+    res.respond(200, {});
+  },
+};
+
 /**
  * @api {post} /api/v3/members/transfer-gems Send a gem gift to a member
  * @apiName TransferGems