diff --git a/src/lib/__snapshots__/create-config.test.ts.snap b/src/lib/__snapshots__/create-config.test.ts.snap
index 4abee2e5d4..74bdf34609 100644
--- a/src/lib/__snapshots__/create-config.test.ts.snap
+++ b/src/lib/__snapshots__/create-config.test.ts.snap
@@ -154,6 +154,7 @@ exports[`should create default config 1`] = `
   "ui": {
     "environment": "Open Source",
   },
+  "userInactivityThresholdInDays": 180,
   "versionCheck": {
     "enable": true,
     "url": "https://version.unleash.run",
diff --git a/src/lib/create-config.ts b/src/lib/create-config.ts
index c3550efd9b..a3156fb9b0 100644
--- a/src/lib/create-config.ts
+++ b/src/lib/create-config.ts
@@ -713,6 +713,14 @@ export function createConfig(options: IUnleashOptions): IUnleashConfig {
 
     const openAIAPIKey = process.env.OPENAI_API_KEY;
 
+    const defaultDaysToBeConsideredInactive = 180;
+    const userInactivityThresholdInDays =
+        options.userInactivityThresholdInDays ??
+        parseEnvVarNumber(
+            process.env.USER_INACTIVITY_THRESHOLD_IN_DAYS,
+            defaultDaysToBeConsideredInactive,
+        );
+
     return {
         db,
         session,
@@ -752,6 +760,7 @@ export function createConfig(options: IUnleashOptions): IUnleashConfig {
         feedbackUriPath,
         dailyMetricsStorageDays,
         openAIAPIKey,
+        userInactivityThresholdInDays,
     };
 }
 
diff --git a/src/lib/types/option.ts b/src/lib/types/option.ts
index 2f265eb121..b9cb4957fe 100644
--- a/src/lib/types/option.ts
+++ b/src/lib/types/option.ts
@@ -156,6 +156,7 @@ export interface IUnleashOptions {
             | 'segments'
         >
     >;
+    userInactivityThresholdInDays?: number;
 }
 
 export interface IEmailOption {
@@ -274,4 +275,5 @@ export interface IUnleashConfig {
     rateLimiting: IRateLimiting;
     feedbackUriPath?: string;
     openAIAPIKey?: string;
+    userInactivityThresholdInDays: number;
 }
diff --git a/src/lib/users/inactive/createInactiveUsersService.ts b/src/lib/users/inactive/createInactiveUsersService.ts
index 693a322d08..0fb077122b 100644
--- a/src/lib/users/inactive/createInactiveUsersService.ts
+++ b/src/lib/users/inactive/createInactiveUsersService.ts
@@ -5,30 +5,32 @@ import { InactiveUsersStore } from './inactive-users-store';
 import { FakeInactiveUsersStore } from './fakes/fake-inactive-users-store';
 import type { UserService } from '../../services';
 
-export const DAYS_TO_BE_COUNTED_AS_INACTIVE = 180;
 export const createInactiveUsersService = (
     db: Db,
     config: IUnleashConfig,
     userService: UserService,
 ): InactiveUsersService => {
-    const { eventBus, getLogger } = config;
+    const { eventBus, getLogger, userInactivityThresholdInDays } = config;
     const inactiveUsersStore = new InactiveUsersStore(db, eventBus, getLogger);
 
     return new InactiveUsersService(
         { inactiveUsersStore },
-        { getLogger },
+        { getLogger, userInactivityThresholdInDays },
         { userService },
     );
 };
 
 export const createFakeInactiveUsersService = (
-    { getLogger, eventBus }: Pick<IUnleashConfig, 'getLogger' | 'eventBus'>,
+    {
+        getLogger,
+        userInactivityThresholdInDays,
+    }: Pick<IUnleashConfig, 'getLogger' | 'userInactivityThresholdInDays'>,
     userService: UserService,
 ): InactiveUsersService => {
     const fakeStore = new FakeInactiveUsersStore();
     return new InactiveUsersService(
         { inactiveUsersStore: fakeStore },
-        { getLogger },
+        { getLogger, userInactivityThresholdInDays },
         { userService },
     );
 };
diff --git a/src/lib/users/inactive/inactive-users-controller.ts b/src/lib/users/inactive/inactive-users-controller.ts
index 6d30f21196..9bf2223f0c 100644
--- a/src/lib/users/inactive/inactive-users-controller.ts
+++ b/src/lib/users/inactive/inactive-users-controller.ts
@@ -20,7 +20,6 @@ import {
 import type { IAuthRequest } from '../../routes/unleash-types';
 import type { Response } from 'express';
 import type { OpenApiService } from '../../services';
-import { DAYS_TO_BE_COUNTED_AS_INACTIVE } from './createInactiveUsersService';
 import { anonymise } from '../../util';
 export class InactiveUsersController extends Controller {
     private readonly logger: Logger;
@@ -30,6 +29,8 @@ export class InactiveUsersController extends Controller {
     private openApiService: OpenApiService;
 
     private flagResolver: IFlagResolver;
+
+    private readonly userInactivityThresholdInDays: number;
     constructor(
         config: IUnleashConfig,
         {
@@ -44,6 +45,8 @@ export class InactiveUsersController extends Controller {
         this.inactiveUsersService = inactiveUsersService;
         this.openApiService = openApiService;
         this.flagResolver = config.flagResolver;
+        this.userInactivityThresholdInDays =
+            config.userInactivityThresholdInDays;
 
         this.route({
             method: 'get',
@@ -54,7 +57,7 @@ export class InactiveUsersController extends Controller {
                 openApiService.validPath({
                     operationId: 'getInactiveUsers',
                     summary: 'Gets inactive users',
-                    description: `Gets all inactive users. An inactive user is a user that has not logged in in the last ${DAYS_TO_BE_COUNTED_AS_INACTIVE} days`,
+                    description: `Gets all inactive users. An inactive user is a user that has not logged in in the last ${this.userInactivityThresholdInDays} days`,
                     tags: ['Users'],
                     responses: {
                         200: createResponseSchema('inactiveUsersSchema'),
@@ -71,7 +74,7 @@ export class InactiveUsersController extends Controller {
                 openApiService.validPath({
                     operationId: 'deleteInactiveUsers',
                     summary: 'Deletes inactive users',
-                    description: `Deletes all inactive users. An inactive user is a user that has not logged in in the last ${DAYS_TO_BE_COUNTED_AS_INACTIVE} days`,
+                    description: `Deletes all inactive users. An inactive user is a user that has not logged in in the last ${this.userInactivityThresholdInDays} days`,
                     tags: ['Users'],
                     requestBody: createRequestSchema('idsSchema'),
                     responses: {
diff --git a/src/lib/users/inactive/inactive-users-service.ts b/src/lib/users/inactive/inactive-users-service.ts
index 9cd58523f0..e90f0ddaaf 100644
--- a/src/lib/users/inactive/inactive-users-service.ts
+++ b/src/lib/users/inactive/inactive-users-service.ts
@@ -8,15 +8,18 @@ import type { IInactiveUsersStore } from './types/inactive-users-store-type';
 import type { Logger } from '../../logger';
 import type { InactiveUserSchema } from '../../openapi';
 import type { UserService } from '../../services';
-import { DAYS_TO_BE_COUNTED_AS_INACTIVE } from './createInactiveUsersService';
 
 export class InactiveUsersService {
     private inactiveUsersStore: IInactiveUsersStore;
     private readonly logger: Logger;
     private userService: UserService;
+    private readonly userInactivityThresholdInDays: number;
     constructor(
         { inactiveUsersStore }: Pick<IUnleashStores, 'inactiveUsersStore'>,
-        { getLogger }: Pick<IUnleashConfig, 'getLogger'>,
+        {
+            getLogger,
+            userInactivityThresholdInDays,
+        }: Pick<IUnleashConfig, 'getLogger' | 'userInactivityThresholdInDays'>,
         services: {
             userService: UserService;
         },
@@ -24,11 +27,12 @@ export class InactiveUsersService {
         this.logger = getLogger('services/client-feature-toggle-service.ts');
         this.inactiveUsersStore = inactiveUsersStore;
         this.userService = services.userService;
+        this.userInactivityThresholdInDays = userInactivityThresholdInDays;
     }
 
     async getInactiveUsers(): Promise<InactiveUserSchema[]> {
         const users = await this.inactiveUsersStore.getInactiveUsers(
-            DAYS_TO_BE_COUNTED_AS_INACTIVE,
+            this.userInactivityThresholdInDays,
         );
         if (users.length > 0) {
             return users.map((user) => {