diff --git a/src/cron/delivery-channel-validation.ts b/src/cron/delivery-channel-validation.ts
index d87ca2e31550..3328858d66cb 100644
--- a/src/cron/delivery-channel-validation.ts
+++ b/src/cron/delivery-channel-validation.ts
@@ -8,6 +8,7 @@ import {
 import { normalizeAccountId } from "../routing/account-id.js";
 import { resolveNormalizedAccountEntry } from "../routing/account-lookup.js";
 import { isDeliverableMessageChannel, normalizeMessageChannel } from "../utils/message-channel.js";
+import { resolveFailureAlert } from "./service/failure-alerts.js";
 import type { CronDelivery, CronFailureAlert, CronJobCreate } from "./types.js";
 
 function hasExplicitChannelConfigEntry(cfg: OpenClawConfig): boolean {
@@ -180,45 +181,23 @@ export async function assertValidCronFailureAlert(params: {
   failureAlert?: CronFailureAlert | false;
   delivery?: CronDelivery;
 }) {
-  const failureAlert = params.failureAlert;
-  const globalFailureAlert = params.cfg.cron?.failureAlert;
-  // `false` disables alerts. An unset job alert still inherits an enabled global
-  // alert, so validate its effective route rather than allowing it to bypass the
-  // same channel checks as an explicit per-job alert.
-  if (failureAlert === false || (!failureAlert && globalFailureAlert?.enabled !== true)) {
+  // Validate the scheduler-owned route so prefix, global, and inheritance
+  // decisions cannot diverge between mutations and actual alert delivery.
+  const failureAlert = resolveFailureAlert(
+    { deps: { cronConfig: params.cfg.cron } },
+    { delivery: params.delivery, failureAlert: params.failureAlert },
+  );
+  if (!failureAlert || failureAlert.mode === "webhook") {
     return;
   }
-  // Only announce alerts route through a channel type; webhook alerts POST to
-  // `to`. Resolve the effective mode exactly as runtime does in
-  // resolveFailureAlert(): a job that omits `mode` inherits the global cron
-  // failure-alert mode, so validating with a hard "announce" default would
-  // wrongly reject a channel that a globally webhook-mode alert never uses.
-  const effectiveMode = failureAlert?.mode ?? globalFailureAlert?.mode;
-  if (effectiveMode === "webhook") {
-    return;
-  }
-  // Mirror resolveFailureAlert(): the alert inherits the job delivery channel and
-  // `to`, then the final send channel is resolved from that effective (channel,
-  // to) pair - a provider prefix in `to` only wins when the effective channel is
-  // unset/"last". Inheriting even when the alert names no route of its own means a
-  // routing-changing edit (e.g. flipping mode to announce) that activates a
-  // legacy-invalid inherited delivery channel is rejected up front rather than
-  // only when the alert fires.
-  const effectiveChannel = failureAlert?.channel ?? params.delivery?.channel;
-  const effectiveTo = failureAlert?.to ?? params.delivery?.to;
-  const resolvedChannel =
-    resolveAnnounceValidationChannel({
-      channel: effectiveChannel,
-      to: effectiveTo,
-    }) ?? "last";
   assertCompatibleAnnounceTarget({
-    channel: effectiveChannel,
-    to: effectiveTo,
+    channel: failureAlert.channel,
+    to: failureAlert.to,
     field: "failureAlert.channel",
   });
   await assertConfiguredAnnounceChannel({
     cfg: params.cfg,
-    channel: resolvedChannel,
+    channel: failureAlert.channel,
     field: "failureAlert.channel",
   });
 }
diff --git a/src/cron/service/failure-alerts.account-routing.test.ts b/src/cron/service/failure-alerts.account-routing.test.ts
index 6d4b51af849f..144a719b66eb 100644
--- a/src/cron/service/failure-alerts.account-routing.test.ts
+++ b/src/cron/service/failure-alerts.account-routing.test.ts
@@ -1,10 +1,45 @@
-import { describe, expect, it, vi } from "vitest";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { resetPluginRuntimeStateForTest, setActivePluginRegistry } from "../../plugins/runtime.js";
+import {
+  createChannelTestPluginBase,
+  createTestRegistry,
+} from "../../test-utils/channel-plugins.js";
 import type { CronJob } from "../types.js";
 import { resolveFailureAlert } from "./failure-alerts.js";
 import { createCronServiceState } from "./state.js";
 import { applyJobResult } from "./timer.js";
 
 describe("cron failure alert account routing", () => {
+  beforeEach(() => {
+    setActivePluginRegistry(
+      createTestRegistry(
+        [
+          { id: "telegram", aliases: [], targetPrefixes: ["telegram", "tg"] },
+          {
+            id: "googlechat",
+            aliases: ["gchat", "google-chat"],
+            targetPrefixes: ["googlechat", "google-chat", "gchat"],
+          },
+        ].map(({ id, aliases, targetPrefixes }) => {
+          const plugin = createChannelTestPluginBase({ id });
+          return {
+            pluginId: id,
+            plugin: {
+              ...plugin,
+              meta: { ...plugin.meta, aliases },
+              messaging: { targetPrefixes },
+            },
+            source: `test:${id}`,
+          };
+        }),
+      ),
+    );
+  });
+
+  afterEach(() => {
+    resetPluginRuntimeStateForTest();
+  });
+
   it.each([
     {
       name: "inherits the primary account when an alert uses its delivery route",
@@ -17,6 +52,136 @@ describe("cron failure alert account routing", () => {
         threadId: 42,
       },
     },
+    {
+      name: "inherits the primary account and topic when an alert repeats its recipient",
+      globalAlert: { enabled: true, after: 1 },
+      jobAlert: { to: "telegram:19098680" },
+      expected: {
+        channel: "telegram",
+        to: "telegram:19098680",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "inherits the primary account and topic through a provider target alias",
+      globalAlert: { enabled: true, after: 1 },
+      jobAlert: { to: "tg:19098680" },
+      expected: {
+        channel: "telegram",
+        to: "tg:19098680",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "inherits the primary account and topic when delivery uses the target alias",
+      globalAlert: { enabled: true, after: 1 },
+      deliveryTo: "tg:19098680",
+      jobAlert: { to: "telegram:19098680" },
+      expected: {
+        channel: "telegram",
+        to: "telegram:19098680",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "normalizes provider alias case and surrounding recipient whitespace",
+      globalAlert: { enabled: true, after: 1 },
+      jobAlert: { to: "  TG: 19098680  " },
+      expected: {
+        channel: "telegram",
+        to: "TG: 19098680",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "inherits the primary account and topic through a selected channel alias",
+      globalAlert: { enabled: true, after: 1 },
+      deliveryChannel: "gchat",
+      deliveryTo: "gchat:RoomA",
+      jobAlert: { channel: "gchat", to: "googlechat:RoomA" },
+      expected: {
+        channel: "googlechat",
+        to: "googlechat:RoomA",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "inherits the primary account and topic when the alert selects a channel alias",
+      globalAlert: { enabled: true, after: 1 },
+      deliveryChannel: "googlechat",
+      deliveryTo: "googlechat:RoomA",
+      jobAlert: { channel: "gchat", to: "googlechat:RoomA" },
+      expected: {
+        channel: "googlechat",
+        to: "googlechat:RoomA",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "inherits the primary account and topic when delivery selects a channel alias",
+      globalAlert: { enabled: true, after: 1 },
+      deliveryChannel: "gchat",
+      deliveryTo: "gchat:RoomA",
+      jobAlert: { channel: "googlechat", to: "googlechat:RoomA" },
+      expected: {
+        channel: "googlechat",
+        to: "googlechat:RoomA",
+        accountId: "telegram-bot",
+        threadId: 42,
+      },
+    },
+    {
+      name: "does not equate case-sensitive recipient identities across provider aliases",
+      globalAlert: { enabled: true, after: 1 },
+      deliveryChannel: "googlechat",
+      deliveryTo: "googlechat:RoomA",
+      jobAlert: { to: "gchat:rooma" },
+      expected: {
+        channel: "googlechat",
+        to: "gchat:rooma",
+        accountId: undefined,
+        threadId: undefined,
+      },
+    },
+    {
+      name: "does not equate a provider alias targeting another topic",
+      globalAlert: { enabled: true, after: 1 },
+      jobAlert: { to: "tg:19098680:topic:99" },
+      expected: {
+        channel: "telegram",
+        to: "tg:19098680:topic:99",
+        accountId: undefined,
+        threadId: undefined,
+      },
+    },
+    {
+      name: "does not inherit the primary account or topic for another recipient",
+      globalAlert: { enabled: true, after: 1 },
+      jobAlert: { to: "telegram:19098681" },
+      expected: {
+        channel: "telegram",
+        to: "telegram:19098681",
+        accountId: undefined,
+        threadId: undefined,
+      },
+    },
+    {
+      name: "does not inherit the primary topic when an aliased recipient uses another account",
+      globalAlert: { enabled: true, after: 1 },
+      jobAlert: { to: "tg:19098680", accountId: "alert-bot" },
+      expected: {
+        channel: "telegram",
+        to: "tg:19098680",
+        accountId: "alert-bot",
+        threadId: undefined,
+      },
+    },
     {
       name: "prefers an explicit alert account over the primary account",
       globalAlert: { enabled: true, after: 1 },
@@ -49,7 +214,8 @@ describe("cron failure alert account routing", () => {
         accountId: undefined,
       },
     },
-  ])("$name", ({ globalAlert, jobAlert, expected }) => {
+  ])("$name", (testCase) => {
+    const { globalAlert, jobAlert, expected } = testCase;
     const state = createCronServiceState({
       storePath: "/tmp/openclaw-cron-failure-alert-account-routing.json",
       cronEnabled: true,
@@ -72,8 +238,8 @@ describe("cron failure alert account routing", () => {
       payload: { kind: "agentTurn", message: "report" },
       delivery: {
         mode: "announce",
-        channel: "telegram",
-        to: "telegram:19098680",
+        channel: "deliveryChannel" in testCase ? testCase.deliveryChannel : "telegram",
+        to: "deliveryTo" in testCase ? testCase.deliveryTo : "telegram:19098680",
         accountId: "telegram-bot",
         threadId: 42,
       },
@@ -124,7 +290,19 @@ describe("cron failure alert account routing", () => {
     expect(job.state.lastFailureAlertAtMs).toBe(endedAt);
   });
 
-  it("keeps the primary topic on same-account failure alerts", () => {
+  it.each([
+    { name: "inherited", failureAlert: undefined },
+    { name: "explicitly repeated", failureAlert: { to: "telegram:19098680" } },
+    { name: "provider-aliased", failureAlert: { to: "tg:19098680" } },
+    {
+      name: "mixed selected-channel aliases",
+      deliveryChannel: "gchat",
+      deliveryTo: "gchat:RoomA",
+      failureAlert: { channel: "googlechat", to: "googlechat:RoomA" },
+      expectedChannel: "googlechat",
+    },
+  ])("keeps the primary account and topic on $name failure alerts", (testCase) => {
+    const { failureAlert } = testCase;
     const sendCronFailureAlert = vi.fn(async () => undefined);
     const state = createCronServiceState({
       storePath: "/tmp/openclaw-cron-failure-alert-thread-routing.json",
@@ -148,11 +326,12 @@ describe("cron failure alert account routing", () => {
       payload: { kind: "agentTurn", message: "report" },
       delivery: {
         mode: "announce",
-        channel: "telegram",
-        to: "telegram:19098680",
+        channel: "deliveryChannel" in testCase ? testCase.deliveryChannel : "telegram",
+        to: "deliveryTo" in testCase ? testCase.deliveryTo : "telegram:19098680",
         accountId: "telegram-bot",
         threadId: 42,
       },
+      ...(failureAlert ? { failureAlert } : {}),
       state: {},
     };
 
@@ -165,8 +344,8 @@ describe("cron failure alert account routing", () => {
 
     expect(sendCronFailureAlert).toHaveBeenCalledWith(
       expect.objectContaining({
-        channel: "telegram",
-        to: "telegram:19098680",
+        channel: "expectedChannel" in testCase ? testCase.expectedChannel : "telegram",
+        to: failureAlert?.to ?? "telegram:19098680",
         accountId: "telegram-bot",
         threadId: 42,
       }),
diff --git a/src/cron/service/failure-alerts.ts b/src/cron/service/failure-alerts.ts
index 0ebe65849bf5..b809f3c46d54 100644
--- a/src/cron/service/failure-alerts.ts
+++ b/src/cron/service/failure-alerts.ts
@@ -2,7 +2,11 @@
 import { normalizeOptionalLowercaseString } from "@openclaw/normalization-core/string-coerce";
 import { truncateUtf16Safe } from "@openclaw/normalization-core/utf16-slice";
 import type { FailoverReason } from "../../agents/embedded-agent-helpers/types.js";
-import { resolveTargetPrefixedChannel } from "../../infra/outbound/channel-target-prefix.js";
+import { normalizeAnyChannelId } from "../../channels/registry-normalize.js";
+import {
+  resolveTargetPrefixedChannel,
+  stripTargetProviderPrefix,
+} from "../../infra/outbound/channel-target-prefix.js";
 import type { CronFailureNotificationDelivery, CronJob, CronMessageChannel } from "../types.js";
 import type { CronServiceState } from "./state.js";
 
@@ -43,11 +47,19 @@ function normalizeCronMessageChannel(input: unknown): CronMessageChannel | undef
 function resolveFailureAlertChannel(channel: unknown, to?: string): CronMessageChannel | undefined {
   const normalized = normalizeCronMessageChannel(channel);
   if (normalized && normalized !== "last") {
-    return normalized;
+    return normalizeAnyChannelId(normalized) ?? normalized;
   }
   return normalizeCronMessageChannel(resolveTargetPrefixedChannel(to)) ?? normalized;
 }
 
+function normalizeFailureAlertRecipient(channel: CronMessageChannel, to: string): string {
+  if (resolveTargetPrefixedChannel(to) !== channel) {
+    return to;
+  }
+  // Canonicalize loaded-provider aliases only; recipient/topic ids can be case-sensitive.
+  return stripTargetProviderPrefix(to, to.slice(0, to.indexOf(":")));
+}
+
 function normalizeTo(input: unknown): string | undefined {
   if (typeof input !== "string") {
     return undefined;
@@ -74,8 +86,8 @@ function clampNonNegativeInt(value: unknown, fallback: number): number {
 
 /** Resolves effective failure-alert policy from job config, delivery defaults, and global cron config. */
 export function resolveFailureAlert(
-  state: CronServiceState,
-  job: CronJob,
+  state: { deps: Pick<CronServiceState["deps"], "cronConfig"> },
+  job: Pick<CronJob, "delivery" | "failureAlert">,
 ): ResolvedFailureAlert | null {
   const globalConfig = state.deps.cronConfig?.failureAlert;
   const jobConfig = job.failureAlert === false ? undefined : job.failureAlert;
@@ -108,10 +120,15 @@ export function resolveFailureAlert(
     channel === deliveryChannel || (channel === "last" && !deliveryChannel);
   const compatibleDeliveryTo = inheritsDeliveryChannel ? deliveryTo : undefined;
   const explicitTo = jobTo ?? globalTo;
+  const inheritsDeliveryRoute =
+    inheritsDeliveryChannel &&
+    (explicitTo === undefined ||
+      explicitTo === deliveryTo ||
+      (deliveryTo !== undefined &&
+        normalizeFailureAlertRecipient(channel, explicitTo) ===
+          normalizeFailureAlertRecipient(channel, deliveryTo)));
   const inheritedDeliveryAccountId =
-    mode !== "webhook" && !explicitTo && inheritsDeliveryChannel
-      ? job.delivery?.accountId
-      : undefined;
+    mode !== "webhook" && inheritsDeliveryRoute ? job.delivery?.accountId : undefined;
   const accountId =
     jobConfig?.accountId ??
     (inheritsGlobalRoute ? globalConfig?.accountId : undefined) ??
@@ -119,10 +136,7 @@ export function resolveFailureAlert(
   // A topic belongs to its channel, peer, and account; never attach the
   // primary topic to an independently routed failure destination.
   const inheritsDeliveryThread =
-    mode !== "webhook" &&
-    inheritsDeliveryChannel &&
-    (explicitTo === undefined || explicitTo === deliveryTo) &&
-    accountId === job.delivery?.accountId;
+    mode !== "webhook" && inheritsDeliveryRoute && accountId === job.delivery?.accountId;
 
   // Announce alerts inherit the job delivery target; webhook alerts require an
   // explicit alert target so chat recipients are not reused as URLs.
diff --git a/src/gateway/server-methods/cron.validation.test.ts b/src/gateway/server-methods/cron.validation.test.ts
index 06144eb6f7db..19947c95fab0 100644
--- a/src/gateway/server-methods/cron.validation.test.ts
+++ b/src/gateway/server-methods/cron.validation.test.ts
@@ -2643,13 +2643,13 @@ describe("cron method validation", () => {
   });
 
   it("rejects a provider-prefixed failureAlert.to for an unconfigured channel", async () => {
-    // No explicit channel, but `slack:...` resolves to slack, which is not
-    // configured here, so it must be rejected up front rather than at delivery.
+    // The alert owns its prefixed channel even when primary delivery is valid;
+    // reject that independently selected channel when it is not configured.
     setRuntimeConfig(telegramConfig());
 
     const { context, respond } = await invokeCronUpdate(
       { id: "cron-1", patch: { failureAlert: { to: "slack:C123" } } },
-      createCronJob(),
+      createCronJob({ delivery: { mode: "announce", channel: "telegram", to: "telegram:1" } }),
     );
 
     expect(context.cron.update).not.toHaveBeenCalled();
@@ -2807,18 +2807,68 @@ describe("cron method validation", () => {
     expectCronSuccess(respond);
   });
 
-  it("rejects a failureAlert.to whose prefix conflicts with the inherited delivery channel", async () => {
-    // The alert omits its own channel, so runtime sends via the delivery channel
-    // (telegram); a `slack:`-prefixed target would route to the wrong place, so
-    // reject it up front instead of letting it fail at delivery.
+  it.each([
+    {
+      name: "provider-prefixed recipient",
+      delivery: { mode: "announce", channel: "telegram", to: "telegram:1" },
+      alertTo: "slack:C123",
+    },
+    {
+      name: "provider-alias recipient",
+      delivery: { mode: "announce", channel: "slack", to: "slack:C123" },
+      alertTo: "tg:123",
+    },
+  ] as const)("lets a $name select its own alert channel", async ({ delivery, alertTo }) => {
     setRuntimeConfig(telegramSlackConfig());
 
     const { context, respond } = await invokeCronUpdate(
-      { id: "cron-1", patch: { failureAlert: { to: "slack:C123" } } },
+      { id: "cron-1", patch: { failureAlert: { to: alertTo } } },
+      createCronJob({ delivery }),
+    );
+
+    expect(context.cron.update).toHaveBeenCalled();
+    expectCronSuccess(respond);
+  });
+
+  it("accepts a provider-prefixed alert on another channel when creating a job", async () => {
+    setRuntimeConfig(telegramSlackConfig());
+
+    const { context, respond } = await invokeCronAdd(
+      agentTurnCronParams({
+        delivery: { mode: "announce", channel: "telegram", to: "telegram:1" },
+        failureAlert: { to: "slack:C123" },
+      }),
+    );
+
+    expect(context.cron.add).toHaveBeenCalled();
+    expectCronSuccess(respond);
+  });
+
+  it("does not inherit a primary recipient for another explicit failure-alert channel", async () => {
+    setRuntimeConfig(telegramSlackConfig());
+
+    const { context, respond } = await invokeCronUpdate(
+      { id: "cron-1", patch: { failureAlert: { channel: "slack" } } },
       createCronJob({ delivery: { mode: "announce", channel: "telegram", to: "telegram:1" } }),
     );
 
-    expect(context.cron.update).not.toHaveBeenCalled();
+    expect(context.cron.update).toHaveBeenCalled();
+    expectCronSuccess(respond);
+  });
+
+  it("rejects an unconfigured inherited global failure-alert channel", async () => {
+    setRuntimeConfig({
+      ...telegramConfig(),
+      cron: { failureAlert: { enabled: true, channel: "slack", to: "slack:C123" } },
+    });
+
+    const { context, respond } = await invokeCronAdd(
+      agentTurnCronParams({
+        delivery: { mode: "announce", channel: "telegram", to: "telegram:1" },
+      }),
+    );
+
+    expect(context.cron.add).not.toHaveBeenCalled();
     expectResponseError(respond, {
       code: "INVALID_REQUEST",
       messageIncludes: "failureAlert.channel",
@@ -2893,10 +2943,9 @@ describe("cron method validation", () => {
     expectCronSuccess(respond);
   });
 
-  it("revalidates an inherited failureAlert when a delivery-only patch changes the channel", async () => {
-    // The alert has no own channel, so it inherits delivery. Switching delivery
-    // from slack to telegram makes its slack-prefixed target route wrong, so the
-    // delivery-only edit must re-check the alert even though the patch omits it.
+  it("keeps a provider-prefixed failure alert when primary delivery changes channels", async () => {
+    // A provider-prefixed alert owns its channel even without `channel`, so a
+    // primary-delivery change cannot invalidate that independent destination.
     setRuntimeConfig(telegramSlackConfig());
 
     const { context, respond } = await invokeCronUpdate(
@@ -2907,11 +2956,8 @@ describe("cron method validation", () => {
       }),
     );
 
-    expect(context.cron.update).not.toHaveBeenCalled();
-    expectResponseError(respond, {
-      code: "INVALID_REQUEST",
-      messageIncludes: "failureAlert.channel",
-    });
+    expect(context.cron.update).toHaveBeenCalled();
+    expectCronSuccess(respond);
   });
 
   it("does not block a non-routing delivery edit on a job with a stale explicit alert channel", async () => {