diff --git a/ts/components/ToastManager.dom.stories.tsx b/ts/components/ToastManager.dom.stories.tsx
index 528d74affc..73ded7dd20 100644
--- a/ts/components/ToastManager.dom.stories.tsx
+++ b/ts/components/ToastManager.dom.stories.tsx
@@ -159,8 +159,6 @@ function getToast(toastType: ToastType): AnyToast {
       return { toastType: ToastType.FailedToFetchPhoneNumber };
     case ToastType.FailedToFetchUsername:
       return { toastType: ToastType.FailedToFetchUsername };
-    case ToastType.FailedToSendWithEndorsements:
-      return { toastType: ToastType.FailedToSendWithEndorsements };
     case ToastType.FailedToImportBackup:
       return { toastType: ToastType.FailedToImportBackup };
     case ToastType.FileSaved:
diff --git a/ts/components/ToastManager.dom.tsx b/ts/components/ToastManager.dom.tsx
index 552ba74482..a3665db484 100644
--- a/ts/components/ToastManager.dom.tsx
+++ b/ts/components/ToastManager.dom.tsx
@@ -540,20 +540,6 @@ function renderToast({
     );
   }
 
-  if (toastType === ToastType.FailedToSendWithEndorsements) {
-    return (
-      <Toast
-        onClose={hideToast}
-        toastAction={{
-          label: i18n('icu:Toast__ActionLabel--SubmitLog'),
-          onClick: onShowDebugLog,
-        }}
-      >
-        {i18n('icu:Toast--FailedToSendWithEndorsements')}
-      </Toast>
-    );
-  }
-
   if (toastType === ToastType.FailedToImportBackup) {
     return (
       <Toast
diff --git a/ts/services/profiles.preload.ts b/ts/services/profiles.preload.ts
index 17ed5a1f85..5f768e9cdd 100644
--- a/ts/services/profiles.preload.ts
+++ b/ts/services/profiles.preload.ts
@@ -49,10 +49,7 @@ import {
 } from '../Crypto.node.ts';
 import type { ConversationLastProfileType } from '../model-types.d.ts';
 import type { GroupSendToken } from '../types/GroupSendEndorsements.std.ts';
-import {
-  maybeCreateGroupSendEndorsementState,
-  onFailedToSendWithEndorsements,
-} from '../util/groupSendEndorsements.preload.ts';
+import { maybeCreateGroupSendEndorsementState } from '../util/groupSendEndorsements.preload.ts';
 import { ProfileDecryptError } from '../types/errors.std.ts';
 import { signalProtocolStore } from '../SignalProtocolStore.preload.ts';
 import { itemStorage } from '../textsecure/Storage.preload.ts';
@@ -558,10 +555,6 @@ async function doGetProfile(
 
       // Unauthorized/Forbidden
       if (error.code === 401 || error.code === 403) {
-        if (request.groupSendToken != null) {
-          onFailedToSendWithEndorsements(error);
-        }
-
         // Step #: Retries for unauthorized access keys and group send tokens
         if (!isMe(c.attributes)) {
           // Fallback from failed unauth (access key) request
diff --git a/ts/textsecure/getKeysForServiceId.preload.ts b/ts/textsecure/getKeysForServiceId.preload.ts
index 1d0638f0b0..e21e259c9c 100644
--- a/ts/textsecure/getKeysForServiceId.preload.ts
+++ b/ts/textsecure/getKeysForServiceId.preload.ts
@@ -28,7 +28,6 @@ import { createLogger } from '../logging/log.std.ts';
 import { isRecord } from '../util/isRecord.std.ts';
 import type { GroupSendToken } from '../types/GroupSendEndorsements.std.ts';
 import { HTTPError } from '../types/HTTPError.std.ts';
-import { onFailedToSendWithEndorsements } from '../util/groupSendEndorsements.preload.ts';
 import { signalProtocolStore } from '../SignalProtocolStore.preload.ts';
 import { itemStorage } from './Storage.preload.ts';
 
@@ -115,8 +114,6 @@ async function getServerKeys(
     } catch (error) {
       if (!isUnauthorizedError(error)) {
         throw error;
-      } else {
-        onFailedToSendWithEndorsements(error);
       }
     }
   }
diff --git a/ts/types/Toast.dom.tsx b/ts/types/Toast.dom.tsx
index a3e9e60ecd..b9602e9d66 100644
--- a/ts/types/Toast.dom.tsx
+++ b/ts/types/Toast.dom.tsx
@@ -53,7 +53,6 @@ export enum ToastType {
   FailedToDeleteUsername = 'FailedToDeleteUsername',
   FailedToFetchPhoneNumber = 'FailedToFetchPhoneNumber',
   FailedToFetchUsername = 'FailedToFetchUsername',
-  FailedToSendWithEndorsements = 'FailedToSendWithEndorsements',
   FailedToImportBackup = 'FailedToImportBackup',
   FileSaved = 'FileSaved',
   FileSize = 'FileSize',
@@ -181,7 +180,6 @@ export type AnyToast =
   | { toastType: ToastType.FailedToDeleteUsername }
   | { toastType: ToastType.FailedToFetchPhoneNumber }
   | { toastType: ToastType.FailedToFetchUsername }
-  | { toastType: ToastType.FailedToSendWithEndorsements }
   | { toastType: ToastType.FailedToImportBackup }
   | {
       toastType: ToastType.FileSaved;
diff --git a/ts/util/assert.std.ts b/ts/util/assert.std.ts
index 04f77e247f..882ad449dc 100644
--- a/ts/util/assert.std.ts
+++ b/ts/util/assert.std.ts
@@ -10,7 +10,7 @@ const log = createLogger('assert');
 /**
  * In development, starts the debugger.
  */
-export function devDebugger(): void {
+function devDebugger(): void {
   if (getEnvironment() === Environment.Development) {
     debugger; // oxlint-disable-line no-debugger
   }
diff --git a/ts/util/groupSendEndorsements.preload.ts b/ts/util/groupSendEndorsements.preload.ts
index 03fbcdeae5..621389b624 100644
--- a/ts/util/groupSendEndorsements.preload.ts
+++ b/ts/util/groupSendEndorsements.preload.ts
@@ -1,7 +1,6 @@
 // Copyright 2024 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 import { Aci } from '@signalapp/libsignal-client';
-import lodash from 'lodash';
 import {
   groupSendEndorsementsDataSchema,
   toGroupSendToken,
@@ -12,7 +11,7 @@ import type {
   GroupSendToken,
   GroupSendEndorsementsData,
 } from '../types/GroupSendEndorsements.std.ts';
-import { devDebugger, strictAssert } from './assert.std.ts';
+import { strictAssert } from './assert.std.ts';
 import {
   GroupSecretParams,
   GroupSendEndorsement,
@@ -23,11 +22,7 @@ import type { ServiceIdString } from '../types/ServiceId.std.ts';
 import { fromAciObject } from '../types/ServiceId.std.ts';
 import { createLogger } from '../logging/log.std.ts';
 import type { GroupV2MemberType } from '../model-types.d.ts';
-import { DurationInSeconds, MINUTE } from './durations/index.std.ts';
-import { ToastType } from '../types/Toast.dom.tsx';
-import * as Errors from '../types/errors.std.ts';
-import { isTestOrMockEnvironment } from '../environment.std.ts';
-import { isNightly } from './version.std.ts';
+import { DurationInSeconds } from './durations/index.std.ts';
 import { parseStrict } from './schemas.std.ts';
 import { DataReader } from '../sql/Client.preload.ts';
 import { maybeUpdateGroup } from '../groups.preload.ts';
@@ -35,8 +30,6 @@ import * as Bytes from '../Bytes.std.ts';
 import { isGroupV2 } from './whatTypeOfConversation.dom.ts';
 import { itemStorage } from '../textsecure/Storage.preload.ts';
 
-const { throttle } = lodash;
-
 const log = createLogger('groupSendEndorsements');
 
 export function decodeGroupSendEndorsementsResponse({
@@ -321,37 +314,11 @@ export class GroupSendEndorsementState {
     return this.#combineMemberEndorsements(serviceIds);
   }
 
-  buildToken(serviceIds: Set<ServiceIdString>): GroupSendToken | null {
-    try {
-      return this.#toToken(this.#buildToken(new Set(serviceIds)));
-    } catch (error) {
-      onFailedToSendWithEndorsements(error);
-    }
-    return null;
+  buildToken(serviceIds: Set<ServiceIdString>): GroupSendToken {
+    return this.#toToken(this.#buildToken(new Set(serviceIds)));
   }
 }
 
-const showFailedToSendWithEndorsementsToast = throttle(
-  () => {
-    window.reduxActions.toast.showToast({
-      toastType: ToastType.FailedToSendWithEndorsements,
-    });
-  },
-  5 * MINUTE,
-  { trailing: false }
-);
-
-export function onFailedToSendWithEndorsements(error: Error): void {
-  log.error('onFailedToSendWithEndorsements', Errors.toLogFormat(error));
-  if (isTestOrMockEnvironment() || isNightly(window.getVersion())) {
-    showFailedToSendWithEndorsementsToast();
-  }
-  if (window.SignalCI) {
-    window.SignalCI.handleEvent('fatalTestError', error);
-  }
-  devDebugger();
-}
-
 type MaybeCreateGroupSendEndorsementStateResult =
   | { state: GroupSendEndorsementState; didRefreshGroupState: false }
   | { state: null; didRefreshGroupState: boolean };
@@ -437,19 +404,9 @@ export async function maybeCreateGroupSendEndorsementState(
 
     // If we've already refreshed the group state, we should log and move on.
     if (alreadyRefreshedGroupState) {
-      onFailedToSendWithEndorsements(
-        new Error(
-          `${logId}: Endorsements invalid after refreshing group: ${result.reason}`
-        )
-      );
       return { state: null, didRefreshGroupState: false };
     }
     if (conversation.isBlocked()) {
-      onFailedToSendWithEndorsements(
-        new Error(
-          `${logId}: Group is blocked and endorsements are invalid: ${result.reason}`
-        )
-      );
       return { state: null, didRefreshGroupState: false };
     }
 
diff --git a/ts/util/sendToGroup.preload.ts b/ts/util/sendToGroup.preload.ts
index c43ce93729..23bc453873 100644
--- a/ts/util/sendToGroup.preload.ts
+++ b/ts/util/sendToGroup.preload.ts
@@ -84,10 +84,7 @@ import { strictAssert } from './assert.std.ts';
 import { createLogger } from '../logging/log.std.ts';
 import { waitForAll } from './waitForAll.std.ts';
 import type { GroupSendEndorsementState } from './groupSendEndorsements.preload.ts';
-import {
-  maybeCreateGroupSendEndorsementState,
-  onFailedToSendWithEndorsements,
-} from './groupSendEndorsements.preload.ts';
+import { maybeCreateGroupSendEndorsementState } from './groupSendEndorsements.preload.ts';
 import type { GroupSendToken } from '../types/GroupSendEndorsements.std.ts';
 import { isAciString } from './isAciString.std.ts';
 import { safeParseStrict, safeParseUnknown } from './schemas.std.ts';
@@ -749,11 +746,9 @@ async function sendToGroupViaSenderKey(
     }
 
     if (error.code === UNKNOWN_RECIPIENT) {
-      onFailedToSendWithEndorsements(error);
       throw new UnknownRecipientError();
     }
     if (error.code === INCORRECT_AUTH_KEY) {
-      onFailedToSendWithEndorsements(error);
       throw new IncorrectSenderKeyAuthError();
     }
 
@@ -790,13 +785,6 @@ async function sendToGroupViaSenderKey(
       }
     }
 
-    if (groupSendEndorsementState != null) {
-      // Ignore server errors
-      if (!(error instanceof HTTPError && error.code === 500)) {
-        onFailedToSendWithEndorsements(error);
-      }
-    }
-
     log.error(
       `${logId}: Returned unexpected error code: ${
         error.code
@@ -1381,11 +1369,6 @@ function isValidSenderKeyRecipient(
 
   if (groupSendEndorsementState != null) {
     if (!groupSendEndorsementState.hasMember(serviceId)) {
-      onFailedToSendWithEndorsements(
-        new Error(
-          `isValidSenderKeyRecipient: Sending to ${serviceId}, missing endorsement`
-        )
-      );
       return false;
     }
   } else if (!getAccessKey(memberConversation.attributes, { story })) {
@@ -1588,12 +1571,6 @@ async function fetchKeysForServiceId(
       await markServiceIdUnregistered(serviceId);
       return;
     }
-    if (useGroupSendEndorsement) {
-      // Ignore untrusted identity key errors
-      if (!(error instanceof OutgoingIdentityKeyError)) {
-        onFailedToSendWithEndorsements(error as Error);
-      }
-    }
     log.error(
       `${logId}: Error fetching ${devices?.join(', ') || 'all'} devices`,
       Errors.toLogFormat(error)