diff --git a/packages/twenty-server/src/engine/core-modules/application/application-marketplace/constants/marketplace-billing-exempt-applications.constant.ts b/packages/twenty-server/src/engine/core-modules/application/application-marketplace/constants/marketplace-billing-exempt-applications.constant.ts
new file mode 100644
index 0000000000..cf75807a2f
--- /dev/null
+++ b/packages/twenty-server/src/engine/core-modules/application/application-marketplace/constants/marketplace-billing-exempt-applications.constant.ts
@@ -0,0 +1,10 @@
+// First-party apps whose logic-function executions do not consume the
+// workspace's credits by default. These apps react to per-record events during
+// mailbox/calendar import (Call Recorder, Last contact), which would otherwise
+// drain the free-tier allowance. Operators can override this per app from the
+// Admin Panel; the default is only applied when the registration is first
+// created from the catalog.
+export const MARKETPLACE_BILLING_EXEMPT_UNIVERSAL_IDENTIFIERS: string[] = [
+  '8da4b8b5-5edf-4880-b51f-ab6e679ec617',
+  '66a504cc-0a75-410e-a43f-cdeae1db1522',
+];
diff --git a/packages/twenty-server/src/engine/core-modules/application/application-marketplace/utils/__tests__/is-billing-exempt-application.util.spec.ts b/packages/twenty-server/src/engine/core-modules/application/application-marketplace/utils/__tests__/is-billing-exempt-application.util.spec.ts
new file mode 100644
index 0000000000..ddf1ca9de8
--- /dev/null
+++ b/packages/twenty-server/src/engine/core-modules/application/application-marketplace/utils/__tests__/is-billing-exempt-application.util.spec.ts
@@ -0,0 +1,16 @@
+import { isBillingExemptApplication } from 'src/engine/core-modules/application/application-marketplace/utils/is-billing-exempt-application.util';
+
+describe('isBillingExemptApplication', () => {
+  it.each([
+    '8da4b8b5-5edf-4880-b51f-ab6e679ec617',
+    '66a504cc-0a75-410e-a43f-cdeae1db1522',
+  ])('should return true for billing-exempt app %s', (universalIdentifier) => {
+    expect(isBillingExemptApplication(universalIdentifier)).toBe(true);
+  });
+
+  it('should return false for a non-exempt app', () => {
+    expect(
+      isBillingExemptApplication('97141c95-2870-5662-8992-44fb6536be9a'),
+    ).toBe(false);
+  });
+});
diff --git a/packages/twenty-server/src/engine/core-modules/application/application-marketplace/utils/is-billing-exempt-application.util.ts b/packages/twenty-server/src/engine/core-modules/application/application-marketplace/utils/is-billing-exempt-application.util.ts
new file mode 100644
index 0000000000..39941a44f7
--- /dev/null
+++ b/packages/twenty-server/src/engine/core-modules/application/application-marketplace/utils/is-billing-exempt-application.util.ts
@@ -0,0 +1,11 @@
+import { MARKETPLACE_BILLING_EXEMPT_UNIVERSAL_IDENTIFIERS } from 'src/engine/core-modules/application/application-marketplace/constants/marketplace-billing-exempt-applications.constant';
+
+// Logic-function executions for these first-party apps (Call Recorder,
+// Last contact) do not consume the workspace's credits. Explicit chargeCredits
+// calls and AI token usage from within the function are billed separately.
+export const isBillingExemptApplication = (
+  universalIdentifier: string,
+): boolean =>
+  MARKETPLACE_BILLING_EXEMPT_UNIVERSAL_IDENTIFIERS.includes(
+    universalIdentifier,
+  );
diff --git a/packages/twenty-server/src/engine/core-modules/logic-function/logic-function-executor/logic-function-executor.service.ts b/packages/twenty-server/src/engine/core-modules/logic-function/logic-function-executor/logic-function-executor.service.ts
index 236e6ddc3d..e119ddee17 100644
--- a/packages/twenty-server/src/engine/core-modules/logic-function/logic-function-executor/logic-function-executor.service.ts
+++ b/packages/twenty-server/src/engine/core-modules/logic-function/logic-function-executor/logic-function-executor.service.ts
@@ -27,6 +27,7 @@ import type { FlatApplicationVariable } from 'src/engine/metadata-modules/flat-a
 import { FlatApplication } from 'src/engine/core-modules/application/types/flat-application.type';
 import { EventLogEmitterService } from 'src/engine/core-modules/event-logs/emit/event-log-emitter.service';
 import { LOGIC_FUNCTION_EXECUTED_EVENT } from 'src/engine/core-modules/event-logs/emit/events/workspace-event/logic-function/logic-function-executed';
+import { isBillingExemptApplication } from 'src/engine/core-modules/application/application-marketplace/utils/is-billing-exempt-application.util';
 import { ApplicationTokenService } from 'src/engine/core-modules/auth/token/services/application-token.service';
 import { NO_BILLING_SUBSCRIPTION } from 'src/engine/core-modules/billing/constants/no-billing-subscription.constant';
 import { BillingUsageService } from 'src/engine/core-modules/billing/services/billing-usage.service';
@@ -523,6 +524,17 @@ export class LogicFunctionExecutorService {
         functionName: flatLogicFunction.name,
       });
 
+    // Billing-exempt apps (first-party maintenance apps whose per-record
+    // triggers fire during mailbox/calendar import) do not consume the
+    // workspace's credits for the invocation itself. Explicit chargeCredits
+    // calls and AI token usage from within the function are billed separately
+    // and stay untouched.
+    const creditsUsedMicro = isBillingExemptApplication(
+      flatApplication.universalIdentifier,
+    )
+      ? 0
+      : 100;
+
     let periodStart: Date | undefined;
 
     if (this.billingService.isBillingEnabled()) {
@@ -534,10 +546,12 @@ export class LogicFunctionExecutorService {
       if (currentBillingSubscription !== NO_BILLING_SUBSCRIPTION) {
         periodStart = currentBillingSubscription.currentPeriodStart;
 
-        await this.billingUsageService.decrementAvailableCreditsInCache({
-          workspaceId,
-          usedCredits: 100,
-        });
+        if (creditsUsedMicro > 0) {
+          await this.billingUsageService.decrementAvailableCreditsInCache({
+            workspaceId,
+            usedCredits: creditsUsedMicro,
+          });
+        }
       }
     }
 
@@ -547,7 +561,7 @@ export class LogicFunctionExecutorService {
         {
           resourceType: UsageResourceType.LOGIC_FUNCTION,
           operationType: UsageOperationType.CODE_EXECUTION,
-          creditsUsedMicro: 100,
+          creditsUsedMicro,
           quantity: 1,
           unit: UsageUnit.INVOCATION,
           resourceId: flatLogicFunction.id,