diff --git a/lib/hooks/peer-list-hooks.js b/lib/hooks/peer-list-hooks.js
--- a/lib/hooks/peer-list-hooks.js
+++ b/lib/hooks/peer-list-hooks.js
@@ -143,6 +143,76 @@
   );
 }
 
+// Sends Olm-encrypted message to multiple peers
+function useBroadcastOlmMessage(): (
+  contentPayload: string,
+  recipients: $ReadOnlyArray<{ +userID: string, +deviceID: string }>,
+) => Promise<void> {
+  const identityContext = React.useContext(IdentityClientContext);
+  if (!identityContext) {
+    throw new Error('Identity service client is not initialized');
+  }
+  const { getAuthMetadata } = identityContext;
+
+  const { sendMessageToDevice } = useTunnelbroker();
+  const { createOlmSessionsWithPeer } = usePeerOlmSessionsCreatorContext();
+
+  return React.useCallback(
+    async (contentPayload, recipients) => {
+      const authMetadata = await getAuthMetadata();
+      const { userID: thisUserID, deviceID: thisDeviceID } = authMetadata;
+      if (!thisDeviceID || !thisUserID) {
+        throw new Error('No auth metadata');
+      }
+      const { olmAPI } = getConfig();
+      await olmAPI.initializeCryptoAccount();
+      for (const recipient of recipients) {
+        try {
+          const encryptedData = await olmAPI.encrypt(
+            contentPayload,
+            recipient.deviceID,
+          );
+          const encryptedMessage: EncryptedMessage = {
+            type: peerToPeerMessageTypes.ENCRYPTED_MESSAGE,
+            senderInfo: { deviceID: thisDeviceID, userID: thisUserID },
+            encryptedData,
+          };
+          await sendMessageToDevice({
+            deviceID: recipient.deviceID,
+            payload: JSON.stringify(encryptedMessage),
+          });
+        } catch {
+          try {
+            await createOlmSessionsWithPeer(
+              recipient.userID,
+              recipient.deviceID,
+            );
+            const encryptedData = await olmAPI.encrypt(
+              contentPayload,
+              recipient.deviceID,
+            );
+            const encryptedMessage: EncryptedMessage = {
+              type: peerToPeerMessageTypes.ENCRYPTED_MESSAGE,
+              senderInfo: { deviceID: thisDeviceID, userID: thisUserID },
+              encryptedData,
+            };
+            await sendMessageToDevice({
+              deviceID: recipient.deviceID,
+              payload: JSON.stringify(encryptedMessage),
+            });
+          } catch (err) {
+            console.warn(
+              `Error sending Olm-encrypted message to device ${recipient.deviceID}:`,
+              err,
+            );
+          }
+        }
+      }
+    },
+    [createOlmSessionsWithPeer, getAuthMetadata, sendMessageToDevice],
+  );
+}
+
 function useBroadcastAccountDeletion(
   options: { broadcastToOwnDevices?: boolean } = {},
 ): () => Promise<void> {
@@ -225,4 +295,5 @@
   useBroadcastDeviceListUpdates,
   useGetAndUpdateDeviceListsForUsers,
   useBroadcastAccountDeletion,
+  useBroadcastOlmMessage,
 };