diff --git a/TODO.md b/TODO.md
index 6b1355c3..586eec96 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,7 @@
 # TODO
 
-- get devices for members with no shared E2E room?
+- highlight when logging in to new account
+- warn about no E2E room shared if no devices
 - keyboard controls
 - remove useless Base imports in Base components
 - HTile enter trigger leftClicked()
@@ -186,10 +187,8 @@
 - Live-reloading accounts.json
 
 - E2E
-  - List and verify other users's devices
   - SAS verification
   - Request room keys from own other devices
-  - Auto-trust accounts within the same client
   - Provide help when undecryptable messages occur, including:
     - Trigger `nio.AsyncClient.request_room_key`
     - Option to export-logout-login-import to fix one-time key problems
diff --git a/src/backend/matrix_client.py b/src/backend/matrix_client.py
index 270bc464..9ccf5f8a 100644
--- a/src/backend/matrix_client.py
+++ b/src/backend/matrix_client.py
@@ -323,6 +323,8 @@ class MatrixClient(nio.AsyncClient):
                 self.no_unknown_events_filter["room"]["timeline"]["not_types"],
             )
 
+        await self.auto_verify_all_other_accounts()
+
         while True:
             try:
                 self.sync_task = asyncio.ensure_future(self.sync_forever(
@@ -1381,6 +1383,32 @@ class MatrixClient(nio.AsyncClient):
         self.blacklist_device(self.device_store[user_id][device_id])
 
 
+    async def auto_verify_all_other_accounts(self) -> None:
+        """Automatically verify/blacklist our other accounts's devices."""
+
+        for client in self.backend.clients.values():
+            await self.auto_verify_account(client)
+
+
+    async def auto_verify_account(self, client: "MatrixClient") -> None:
+        """Automatically verify/blacklist one of our accounts's devices."""
+
+        if client.user_id == self.user_id:
+            return
+
+        for device in self.device_store.active_user_devices(client.user_id):
+            if device.device_id != client.device_id:
+                continue
+
+            if device.verified or device.blacklisted:
+                continue
+
+            if device.ed25519 == client.olm.account.identity_keys["ed25519"]:
+                self.verify_device(device)
+            else:
+                self.blacklist_device(device)
+
+
     async def delete_devices_with_password(
         self, device_ids: List[str], password: str,
     ) -> None:
diff --git a/src/backend/nio_callbacks.py b/src/backend/nio_callbacks.py
index dcf7c276..084b3169 100644
--- a/src/backend/nio_callbacks.py
+++ b/src/backend/nio_callbacks.py
@@ -109,12 +109,16 @@ class NioCallbacks:
 
     async def onKeysQueryResponse(self, resp: nio.KeysQueryResponse) -> None:
         refresh_rooms = {}
+        clients       = self.client.backend.clients
 
         for user_id in resp.changed:
             for room in self.client.rooms.values():
                 if user_id in room.users:
                     refresh_rooms[room.room_id] = room
 
+            if user_id != self.user_id and user_id in clients:
+                await self.client.auto_verify_account(clients[user_id])
+
         for room_id, room in refresh_rooms.items():
             room_item = self.models[self.user_id, "rooms"].get(room_id)