diff --git a/packages/core/src/baseclient.ts b/packages/core/src/baseclient.ts
index 647d98b61f63..09200e30c503 100644
--- a/packages/core/src/baseclient.ts
+++ b/packages/core/src/baseclient.ts
@@ -435,6 +435,10 @@ export abstract class BaseClient<O extends ClientOptions> implements Client<O> {
    */
   protected _prepareEvent(event: Event, hint: EventHint, scope?: Scope): PromiseLike<Event | null> {
     const options = this.getOptions();
+    const integrations = Object.keys(this._integrations);
+    if (!hint.integrations && integrations.length > 0) {
+      hint.integrations = integrations;
+    }
     return prepareEvent(options, event, hint, scope);
   }
 
diff --git a/packages/core/src/utils/prepareEvent.ts b/packages/core/src/utils/prepareEvent.ts
index 3aa0d86df3f6..73a71e138db2 100644
--- a/packages/core/src/utils/prepareEvent.ts
+++ b/packages/core/src/utils/prepareEvent.ts
@@ -32,12 +32,10 @@ export function prepareEvent(
     event_id: event.event_id || hint.event_id || uuid4(),
     timestamp: event.timestamp || dateTimestampInSeconds(),
   };
+  const integrations = hint.integrations || options.integrations.map(i => i.name);
 
   applyClientOptions(prepared, options);
-  applyIntegrationsMetadata(
-    prepared,
-    options.integrations.map(i => i.name),
-  );
+  applyIntegrationsMetadata(prepared, integrations);
 
   // If we have scope given to us, use it as the base for further modifications.
   // This allows us to prevent unnecessary copying of data if `captureContext` is not provided.
diff --git a/packages/core/test/lib/base.test.ts b/packages/core/test/lib/base.test.ts
index c82014515067..2925c6e213c7 100644
--- a/packages/core/test/lib/base.test.ts
+++ b/packages/core/test/lib/base.test.ts
@@ -4,7 +4,7 @@ import { dsnToString, logger, SentryError, SyncPromise } from '@sentry/utils';
 import { Hub, makeSession, Scope } from '../../src';
 import * as integrationModule from '../../src/integration';
 import { getDefaultTestClientOptions, TestClient } from '../mocks/client';
-import { TestIntegration } from '../mocks/integration';
+import { AdHocIntegration, TestIntegration } from '../mocks/integration';
 import { makeFakeTransport } from '../mocks/transport';
 
 const PUBLIC_DSN = 'https://username@domain/123';
@@ -678,6 +678,25 @@ describe('BaseClient', () => {
       });
     });
 
+    test('send all installed integrations in event sdk metadata', () => {
+      expect.assertions(1);
+
+      const options = getDefaultTestClientOptions({ dsn: PUBLIC_DSN, integrations: [new TestIntegration()] });
+      const client = new TestClient(options);
+      client.setupIntegrations();
+      client.addIntegration(new AdHocIntegration());
+
+      client.captureException(new Error('test exception'));
+
+      expect(TestClient.instance!.event).toEqual(
+        expect.objectContaining({
+          sdk: expect.objectContaining({
+            integrations: expect.arrayContaining(['TestIntegration', 'AdHockIntegration']),
+          }),
+        }),
+      );
+    });
+
     test('normalizes event with default depth of 3', () => {
       expect.assertions(1);
 
diff --git a/packages/core/test/mocks/integration.ts b/packages/core/test/mocks/integration.ts
index ff01158b0632..ce95d04520a7 100644
--- a/packages/core/test/mocks/integration.ts
+++ b/packages/core/test/mocks/integration.ts
@@ -36,3 +36,13 @@ export class AddAttachmentTestIntegration implements Integration {
     });
   }
 }
+
+export class AdHocIntegration implements Integration {
+  public static id: string = 'AdHockIntegration';
+
+  public name: string = 'AdHockIntegration';
+
+  public setupOnce(): void {
+    // Noop
+  }
+}
diff --git a/packages/replay/src/util/prepareReplayEvent.ts b/packages/replay/src/util/prepareReplayEvent.ts
index c2b645e92bdc..522e7e7689bc 100644
--- a/packages/replay/src/util/prepareReplayEvent.ts
+++ b/packages/replay/src/util/prepareReplayEvent.ts
@@ -1,5 +1,6 @@
 import type { Scope } from '@sentry/core';
 import { prepareEvent } from '@sentry/core';
+import type { IntegrationIndex } from '@sentry/core/build/types/integration';
 import type { Client, ReplayEvent } from '@sentry/types';
 
 /**
@@ -11,12 +12,21 @@ export async function prepareReplayEvent({
   replayId: event_id,
   event,
 }: {
-  client: Client;
+  client: Client & { _integrations?: IntegrationIndex };
   scope: Scope;
   replayId: string;
   event: ReplayEvent;
 }): Promise<ReplayEvent | null> {
-  const preparedEvent = (await prepareEvent(client.getOptions(), event, { event_id }, scope)) as ReplayEvent | null;
+  const integrations =
+    typeof client._integrations === 'object' && client._integrations !== null && !Array.isArray(client._integrations)
+      ? Object.keys(client._integrations)
+      : undefined;
+  const preparedEvent = (await prepareEvent(
+    client.getOptions(),
+    event,
+    { event_id, integrations },
+    scope,
+  )) as ReplayEvent | null;
 
   // If e.g. a global event processor returned null
   if (!preparedEvent) {
diff --git a/packages/types/src/event.ts b/packages/types/src/event.ts
index 86280fc7e65b..7c00bcef4718 100644
--- a/packages/types/src/event.ts
+++ b/packages/types/src/event.ts
@@ -80,4 +80,5 @@ export interface EventHint {
   originalException?: Error | string | null;
   attachments?: Attachment[];
   data?: any;
+  integrations?: string[];
 }
diff --git a/rollup/plugins/bundlePlugins.js b/rollup/plugins/bundlePlugins.js
index 5e483dfddc46..0fb662b7e3e4 100644
--- a/rollup/plugins/bundlePlugins.js
+++ b/rollup/plugins/bundlePlugins.js
@@ -119,6 +119,8 @@ export function makeTerserPlugin() {
           // We want to keept he _replay and _isEnabled variable unmangled to enable integration tests to access it
           '_replay',
           '_isEnabled',
+          // We want to keep the _integrations variable unmangled to send all installed integrations from replay
+          '_integrations',
         ],
       },
     },