diff --git a/extensions/googlechat/src/monitor-access.ts b/extensions/googlechat/src/monitor-access.ts
index bb5b6de9211..0babbc43851 100644
--- a/extensions/googlechat/src/monitor-access.ts
+++ b/extensions/googlechat/src/monitor-access.ts
@@ -7,6 +7,7 @@ import {
   resolveDefaultGroupPolicy,
   resolveDmGroupAccessWithLists,
   resolveMentionGatingWithBypass,
+  resolveSenderScopedGroupPolicy,
   warnMissingProviderGroupPolicyFallbackOnce,
 } from "openclaw/plugin-sdk/googlechat";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/googlechat";
@@ -229,12 +230,10 @@ export async function applyGoogleChatInboundAccessPolicy(params: {
   const dmPolicy = account.config.dm?.policy ?? "pairing";
   const configAllowFrom = (account.config.dm?.allowFrom ?? []).map((v) => String(v));
   const normalizedGroupUsers = groupUsers.map((v) => String(v));
-  const senderGroupPolicy =
-    groupPolicy === "disabled"
-      ? "disabled"
-      : normalizedGroupUsers.length > 0
-        ? "allowlist"
-        : "open";
+  const senderGroupPolicy = resolveSenderScopedGroupPolicy({
+    groupPolicy,
+    groupAllowFrom: normalizedGroupUsers,
+  });
   const shouldComputeAuth = core.channel.commands.shouldComputeCommandAuthorized(rawBody, config);
   const storeAllowFrom =
     !isGroup && dmPolicy !== "allowlist" && (dmPolicy !== "open" || shouldComputeAuth)
diff --git a/extensions/matrix/src/matrix/monitor/access-policy.ts b/extensions/matrix/src/matrix/monitor/access-policy.ts
index 272bc15f0a4..cace7070fd6 100644
--- a/extensions/matrix/src/matrix/monitor/access-policy.ts
+++ b/extensions/matrix/src/matrix/monitor/access-policy.ts
@@ -3,6 +3,7 @@ import {
   issuePairingChallenge,
   readStoreAllowFromForDmPolicy,
   resolveDmGroupAccessWithLists,
+  resolveSenderScopedGroupPolicy,
 } from "openclaw/plugin-sdk/matrix";
 import {
   normalizeMatrixAllowList,
@@ -32,12 +33,10 @@ export async function resolveMatrixAccessState(params: {
       })
     : [];
   const normalizedGroupAllowFrom = normalizeMatrixAllowList(params.groupAllowFrom);
-  const senderGroupPolicy =
-    params.groupPolicy === "disabled"
-      ? "disabled"
-      : normalizedGroupAllowFrom.length > 0
-        ? "allowlist"
-        : "open";
+  const senderGroupPolicy = resolveSenderScopedGroupPolicy({
+    groupPolicy: params.groupPolicy,
+    groupAllowFrom: normalizedGroupAllowFrom,
+  });
   const access = resolveDmGroupAccessWithLists({
     isGroup: !params.isDirectMessage,
     dmPolicy: params.dmPolicy,
diff --git a/extensions/msteams/src/monitor-handler/message-handler.ts b/extensions/msteams/src/monitor-handler/message-handler.ts
index e4a88eb3b6a..2f14945f65e 100644
--- a/extensions/msteams/src/monitor-handler/message-handler.ts
+++ b/extensions/msteams/src/monitor-handler/message-handler.ts
@@ -7,6 +7,7 @@ import {
   createScopedPairingAccess,
   logInboundDrop,
   evaluateSenderGroupAccessForPolicy,
+  resolveSenderScopedGroupPolicy,
   recordPendingHistoryEntryIfEnabled,
   resolveControlCommandGate,
   resolveDefaultGroupPolicy,
@@ -175,12 +176,10 @@ export function createMSTeamsMessageHandler(deps: MSTeamsMessageHandlerDeps) {
       conversationId,
       channelName,
     });
-    const senderGroupPolicy =
-      groupPolicy === "disabled"
-        ? "disabled"
-        : effectiveGroupAllowFrom.length > 0
-          ? "allowlist"
-          : "open";
+    const senderGroupPolicy = resolveSenderScopedGroupPolicy({
+      groupPolicy,
+      groupAllowFrom: effectiveGroupAllowFrom,
+    });
     const access = resolveDmGroupAccessWithLists({
       isGroup: !isDirectMessage,
       dmPolicy,
diff --git a/src/plugin-sdk/googlechat.ts b/src/plugin-sdk/googlechat.ts
index 72c834eb9b5..745fe3bde80 100644
--- a/src/plugin-sdk/googlechat.ts
+++ b/src/plugin-sdk/googlechat.ts
@@ -73,6 +73,7 @@ export type { WizardPrompter } from "../wizard/prompts.js";
 export { resolveInboundRouteEnvelopeBuilderWithRuntime } from "./inbound-envelope.js";
 export { createScopedPairingAccess } from "./pairing-access.js";
 export { issuePairingChallenge } from "../pairing/pairing-challenge.js";
+export { resolveSenderScopedGroupPolicy } from "./group-access.js";
 export { extractToolSend } from "./tool-send.js";
 export { resolveWebhookPath } from "./webhook-path.js";
 export type { WebhookInFlightLimiter } from "./webhook-request-guards.js";
diff --git a/src/plugin-sdk/group-access.test.ts b/src/plugin-sdk/group-access.test.ts
index 135b7b92ff9..81c58b60962 100644
--- a/src/plugin-sdk/group-access.test.ts
+++ b/src/plugin-sdk/group-access.test.ts
@@ -1,5 +1,35 @@
 import { describe, expect, it } from "vitest";
-import { evaluateSenderGroupAccess, evaluateSenderGroupAccessForPolicy } from "./group-access.js";
+import {
+  evaluateSenderGroupAccess,
+  evaluateSenderGroupAccessForPolicy,
+  resolveSenderScopedGroupPolicy,
+} from "./group-access.js";
+
+describe("resolveSenderScopedGroupPolicy", () => {
+  it("preserves disabled policy", () => {
+    expect(
+      resolveSenderScopedGroupPolicy({
+        groupPolicy: "disabled",
+        groupAllowFrom: ["a"],
+      }),
+    ).toBe("disabled");
+  });
+
+  it("maps open/allowlist based on effective sender allowlist", () => {
+    expect(
+      resolveSenderScopedGroupPolicy({
+        groupPolicy: "allowlist",
+        groupAllowFrom: ["a"],
+      }),
+    ).toBe("allowlist");
+    expect(
+      resolveSenderScopedGroupPolicy({
+        groupPolicy: "allowlist",
+        groupAllowFrom: [],
+      }),
+    ).toBe("open");
+  });
+});
 
 describe("evaluateSenderGroupAccessForPolicy", () => {
   it("blocks disabled policy", () => {
diff --git a/src/plugin-sdk/group-access.ts b/src/plugin-sdk/group-access.ts
index d324c80489b..596549212e3 100644
--- a/src/plugin-sdk/group-access.ts
+++ b/src/plugin-sdk/group-access.ts
@@ -14,6 +14,16 @@ export type SenderGroupAccessDecision = {
   reason: SenderGroupAccessReason;
 };
 
+export function resolveSenderScopedGroupPolicy(params: {
+  groupPolicy: GroupPolicy;
+  groupAllowFrom: string[];
+}): GroupPolicy {
+  if (params.groupPolicy === "disabled") {
+    return "disabled";
+  }
+  return params.groupAllowFrom.length > 0 ? "allowlist" : "open";
+}
+
 export function evaluateSenderGroupAccessForPolicy(params: {
   groupPolicy: GroupPolicy;
   providerMissingFallbackApplied?: boolean;
diff --git a/src/plugin-sdk/index.ts b/src/plugin-sdk/index.ts
index f3589732685..68b71a86eb1 100644
--- a/src/plugin-sdk/index.ts
+++ b/src/plugin-sdk/index.ts
@@ -280,6 +280,7 @@ export {
 export {
   evaluateSenderGroupAccess,
   evaluateSenderGroupAccessForPolicy,
+  resolveSenderScopedGroupPolicy,
   type SenderGroupAccessDecision,
   type SenderGroupAccessReason,
 } from "./group-access.js";
diff --git a/src/plugin-sdk/matrix.ts b/src/plugin-sdk/matrix.ts
index 2e44f819940..fa0551ca56e 100644
--- a/src/plugin-sdk/matrix.ts
+++ b/src/plugin-sdk/matrix.ts
@@ -93,6 +93,7 @@ export {
 } from "../security/dm-policy-shared.js";
 export { formatDocsLink } from "../terminal/links.js";
 export type { WizardPrompter } from "../wizard/prompts.js";
+export { resolveSenderScopedGroupPolicy } from "./group-access.js";
 export { createScopedPairingAccess } from "./pairing-access.js";
 export { formatResolvedUnresolvedNote } from "./resolution-notes.js";
 export { runPluginCommandWithTimeout } from "./run-command.js";
diff --git a/src/plugin-sdk/msteams.ts b/src/plugin-sdk/msteams.ts
index 65b6fd21433..2ce1e9eb4a3 100644
--- a/src/plugin-sdk/msteams.ts
+++ b/src/plugin-sdk/msteams.ts
@@ -91,7 +91,10 @@ export {
   resolveDmGroupAccessWithLists,
   resolveEffectiveAllowFromLists,
 } from "../security/dm-policy-shared.js";
-export { evaluateSenderGroupAccessForPolicy } from "./group-access.js";
+export {
+  evaluateSenderGroupAccessForPolicy,
+  resolveSenderScopedGroupPolicy,
+} from "./group-access.js";
 export { formatDocsLink } from "../terminal/links.js";
 export { sleep } from "../utils.js";
 export { loadWebMedia } from "../web/media.js";