diff --git a/src/cron/isolated-agent/delivery-target.ts b/src/cron/isolated-agent/delivery-target.ts
index b97b1afcef4..20da3a12667 100644
--- a/src/cron/isolated-agent/delivery-target.ts
+++ b/src/cron/isolated-agent/delivery-target.ts
@@ -11,8 +11,8 @@ import { resolveSessionDeliveryTarget } from "../../infra/outbound/targets-sessi
 import type { OutboundChannel } from "../../infra/outbound/targets.js";
 import { readChannelAllowFromStoreEntriesSync } from "../../pairing/allow-from-store-read.js";
 import { mapAllowFromEntries } from "../../plugin-sdk/channel-config-helpers.js";
-import { buildChannelAccountBindings } from "../../routing/bindings.js";
-import { normalizeAccountId, normalizeAgentId } from "../../routing/session-key.js";
+import { resolveFirstBoundAccountId } from "../../routing/bound-account-read.js";
+import { normalizeAccountId } from "../../routing/session-key.js";
 
 export type DeliveryTargetResolution =
   | {
@@ -140,12 +140,7 @@ export async function resolveDeliveryTarget(
       : undefined;
   let accountId = explicitAccountId ?? resolved.accountId;
   if (!accountId && channel) {
-    const bindings = buildChannelAccountBindings(cfg);
-    const byAgent = bindings.get(channel);
-    const boundAccounts = byAgent?.get(normalizeAgentId(agentId));
-    if (boundAccounts && boundAccounts.length > 0) {
-      accountId = boundAccounts[0];
-    }
+    accountId = resolveFirstBoundAccountId({ cfg, channelId: channel, agentId });
   }
 
   // job.delivery.accountId takes highest precedence — explicitly set by the job author.
diff --git a/src/routing/bound-account-read.ts b/src/routing/bound-account-read.ts
new file mode 100644
index 00000000000..93212b155e2
--- /dev/null
+++ b/src/routing/bound-account-read.ts
@@ -0,0 +1,65 @@
+import { normalizeChatChannelId } from "../channels/ids.js";
+import { listRouteBindings } from "../config/bindings.js";
+import type { AgentRouteBinding } from "../config/types.agents.js";
+import type { OpenClawConfig } from "../config/types.openclaw.js";
+import { normalizeLowercaseStringOrEmpty } from "../shared/string-coerce.js";
+import { normalizeAccountId, normalizeAgentId } from "./session-key.js";
+
+function normalizeBindingChannelId(raw?: string | null): string | null {
+  const normalized = normalizeChatChannelId(raw);
+  if (normalized) {
+    return normalized;
+  }
+  const fallback = normalizeLowercaseStringOrEmpty(raw);
+  return fallback || null;
+}
+
+function resolveNormalizedBindingMatch(binding: AgentRouteBinding): {
+  agentId: string;
+  accountId: string;
+  channelId: string;
+} | null {
+  if (!binding || typeof binding !== "object") {
+    return null;
+  }
+  const match = binding.match;
+  if (!match || typeof match !== "object") {
+    return null;
+  }
+  const channelId = normalizeBindingChannelId(match.channel);
+  if (!channelId) {
+    return null;
+  }
+  const accountId = typeof match.accountId === "string" ? match.accountId.trim() : "";
+  if (!accountId || accountId === "*") {
+    return null;
+  }
+  return {
+    agentId: normalizeAgentId(binding.agentId),
+    accountId: normalizeAccountId(accountId),
+    channelId,
+  };
+}
+
+export function resolveFirstBoundAccountId(params: {
+  cfg: OpenClawConfig;
+  channelId: string;
+  agentId: string;
+}): string | undefined {
+  const normalizedChannel = normalizeBindingChannelId(params.channelId);
+  if (!normalizedChannel) {
+    return undefined;
+  }
+  const normalizedAgentId = normalizeAgentId(params.agentId);
+  for (const binding of listRouteBindings(params.cfg)) {
+    const resolved = resolveNormalizedBindingMatch(binding);
+    if (
+      resolved &&
+      resolved.channelId === normalizedChannel &&
+      resolved.agentId === normalizedAgentId
+    ) {
+      return resolved.accountId;
+    }
+  }
+  return undefined;
+}