diff --git a/lib/shared/dm-ops/dm-op-utils.js b/lib/shared/dm-ops/dm-op-utils.js
--- a/lib/shared/dm-ops/dm-op-utils.js
+++ b/lib/shared/dm-ops/dm-op-utils.js
@@ -76,7 +76,8 @@
   +recipients:
     | { +type: 'all_peer_devices' | 'self_devices' }
     | { +type: 'some_users', +userIDs: $ReadOnlyArray<string> }
-    | { +type: 'all_thread_members', +threadID: string },
+    | { +type: 'all_thread_members', +threadID: string }
+    | { +type: 'some_devices', +deviceIDs: $ReadOnlyArray<string> },
   +sendOnly?: boolean,
 };
 
@@ -123,6 +124,11 @@
     peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs.filter(peer =>
       userIDs.has(peer.userID),
     );
+  } else if (operation.recipients.type === 'some_devices') {
+    const deviceIDs = new Set(operation.recipients.deviceIDs);
+    peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs.filter(peer =>
+      deviceIDs.has(peer.deviceID),
+    );
   }
 
   const thisDeviceID = await getContentSigningKey();