diff --git a/lib/selectors/socket-selectors.js b/lib/selectors/socket-selectors.js
--- a/lib/selectors/socket-selectors.js
+++ b/lib/selectors/socket-selectors.js
@@ -41,6 +41,7 @@
   calendarActive: boolean,
   oneTimeKeyGenerator: ?OneTimeKeyGenerator,
   getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob>,
+  getInitialNotificationsEncryptedMessage: ?() => Promise<string>,
   serverRequests: $ReadOnlyArray<ClientServerRequest>,
 ) => Promise<$ReadOnlyArray<ClientClientResponse>> = createSelector(
   (state: AppState) => state.threadStore.threadInfos,
@@ -59,6 +60,7 @@
       calendarActive: boolean,
       oneTimeKeyGenerator: ?OneTimeKeyGenerator,
       getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob>,
+      getInitialNotificationsEncryptedMessage: ?() => Promise<string>,
       serverRequests: $ReadOnlyArray<ClientServerRequest>,
     ): Promise<$ReadOnlyArray<ClientClientResponse>> => {
       const clientResponses = [];
@@ -169,6 +171,17 @@
             type: serverRequestTypes.SIGNED_IDENTITY_KEYS_BLOB,
             signedIdentityKeysBlob,
           });
+        } else if (
+          serverRequest.type ===
+            serverRequestTypes.INITIAL_NOTIFICATIONS_ENCRYPTED_MESSAGE &&
+          getInitialNotificationsEncryptedMessage
+        ) {
+          const initialNotificationsEncryptedMessage =
+            await getInitialNotificationsEncryptedMessage();
+          clientResponses.push({
+            type: serverRequestTypes.INITIAL_NOTIFICATIONS_ENCRYPTED_MESSAGE,
+            initialNotificationsEncryptedMessage,
+          });
         }
       }
       return clientResponses;
diff --git a/native/selectors/socket-selectors.js b/native/selectors/socket-selectors.js
--- a/native/selectors/socket-selectors.js
+++ b/native/selectors/socket-selectors.js
@@ -62,27 +62,39 @@
   return signedIdentityKeysBlob;
 }
 
+type NativeGetClientResponsesSelectorInputType = {
+  ...NavPlusRedux,
+  callInitialNotificationsEncryptedMessage: () => Promise<string>,
+};
+
 const nativeGetClientResponsesSelector: (
-  input: NavPlusRedux,
+  input: NativeGetClientResponsesSelectorInputType,
 ) => (
   serverRequests: $ReadOnlyArray<ClientServerRequest>,
 ) => Promise<$ReadOnlyArray<ClientClientResponse>> = createSelector(
-  (input: NavPlusRedux) => getClientResponsesSelector(input.redux),
-  (input: NavPlusRedux) => calendarActiveSelector(input.navContext),
+  (input: NativeGetClientResponsesSelectorInputType) =>
+    getClientResponsesSelector(input.redux),
+  (input: NativeGetClientResponsesSelectorInputType) =>
+    calendarActiveSelector(input.navContext),
+  (input: NativeGetClientResponsesSelectorInputType) =>
+    input.callInitialNotificationsEncryptedMessage,
   (
       getClientResponsesFunc: (
         calendarActive: boolean,
         oneTimeKeyGenerator: ?OneTimeKeyGenerator,
         getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob>,
+        getInitialNotificationsEncryptedMessage: ?() => Promise<string>,
         serverRequests: $ReadOnlyArray<ClientServerRequest>,
       ) => Promise<$ReadOnlyArray<ClientClientResponse>>,
       calendarActive: boolean,
+      getInitialNotificationsEncryptedMessage: () => Promise<string>,
     ) =>
     (serverRequests: $ReadOnlyArray<ClientServerRequest>) =>
       getClientResponsesFunc(
         calendarActive,
         oneTimeKeyGenerator,
         getSignedIdentityKeysBlob,
+        getInitialNotificationsEncryptedMessage,
         serverRequests,
       ),
 );
diff --git a/web/selectors/socket-selectors.js b/web/selectors/socket-selectors.js
--- a/web/selectors/socket-selectors.js
+++ b/web/selectors/socket-selectors.js
@@ -91,6 +91,7 @@
         calendarActive: boolean,
         oneTimeKeyGenerator: ?OneTimeKeyGenerator,
         getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob>,
+        getInitialNotificationsEncryptedMessage: ?() => Promise<string>,
         serverRequests: $ReadOnlyArray<ClientServerRequest>,
       ) => Promise<$ReadOnlyArray<ClientClientResponse>>,
       getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob>,
@@ -101,6 +102,7 @@
         calendarActive,
         null,
         getSignedIdentityKeysBlob,
+        null,
         serverRequests,
       ),
 );