diff --git a/mailpoet/assets/js/src/settings/pages/advanced/inactive_subscribers.tsx b/mailpoet/assets/js/src/settings/pages/advanced/inactive_subscribers.tsx
index 772453f443..905f12e111 100644
--- a/mailpoet/assets/js/src/settings/pages/advanced/inactive_subscribers.tsx
+++ b/mailpoet/assets/js/src/settings/pages/advanced/inactive_subscribers.tsx
@@ -80,6 +80,17 @@ export default function InactiveSubscribers() {
                 {t('after12months')}
               </label>
             </div>
+            <div className="mailpoet-settings-inputs-row">
+              <Radio
+                id="inactive-subscribers-18-months"
+                value="540"
+                checked={duration === '540'}
+                onCheck={setDuration}
+              />
+              <label htmlFor="inactive-subscribers-18-months">
+                {t('after18months')}
+              </label>
+            </div>
           </div>
         )}
       </Inputs>
diff --git a/mailpoet/assets/js/src/settings/store/normalize_settings.ts b/mailpoet/assets/js/src/settings/store/normalize_settings.ts
index 51bff18bf6..10952f76b1 100644
--- a/mailpoet/assets/js/src/settings/store/normalize_settings.ts
+++ b/mailpoet/assets/js/src/settings/store/normalize_settings.ts
@@ -89,7 +89,7 @@ export default function normalizeSettings(data: Record<string, unknown>): Settin
     }),
     tracking: asObject({ level: asEnum(['full', 'partial', 'basic'], 'full') }),
     send_transactional_emails: disabledRadio,
-    deactivate_subscriber_after_inactive_days: asEnum(['', '90', '180', '365'], '180'),
+    deactivate_subscriber_after_inactive_days: asEnum(['', '90', '180', '365', '540'], '365'),
     analytics: asObject({ enabled: disabledRadio }),
     '3rd_party_libs': asObject({ enabled: disabledRadio }),
     captcha: asObject({
diff --git a/mailpoet/assets/js/src/settings/store/types.ts b/mailpoet/assets/js/src/settings/store/types.ts
index 07d412b486..3ee217ed62 100644
--- a/mailpoet/assets/js/src/settings/store/types.ts
+++ b/mailpoet/assets/js/src/settings/store/types.ts
@@ -54,7 +54,7 @@ export type Settings = {
     enabled: '' | '1';
   };
   send_transactional_emails: '' | '1';
-  deactivate_subscriber_after_inactive_days: '' | '90' | '180' | '365';
+  deactivate_subscriber_after_inactive_days: '' | '90' | '180' | '365' | '540';
   analytics: {
     enabled: '' | '1';
   };
diff --git a/mailpoet/lib/Settings/SettingsController.php b/mailpoet/lib/Settings/SettingsController.php
index fbe673b889..83f1d75b37 100644
--- a/mailpoet/lib/Settings/SettingsController.php
+++ b/mailpoet/lib/Settings/SettingsController.php
@@ -12,7 +12,7 @@ class SettingsController {
   const DEFAULT_SENDING_METHOD = 'PHPMail';
   const DEFAULT_SENDING_FREQUENCY_EMAILS = 25;
   const DEFAULT_SENDING_FREQUENCY_INTERVAL = 5; // in minutes
-  const DEFAULT_DEACTIVATE_SUBSCRIBER_AFTER_INACTIVE_DAYS = 180;
+  const DEFAULT_DEACTIVATE_SUBSCRIBER_AFTER_INACTIVE_DAYS = 365;
 
   private $loaded = false;
 
diff --git a/mailpoet/views/settings.html b/mailpoet/views/settings.html
index 754014e2ad..a5e762acd1 100644
--- a/mailpoet/views/settings.html
+++ b/mailpoet/views/settings.html
@@ -138,8 +138,9 @@
     'inactiveSubsDescription': __("Gmail, Yahoo and other email providers will treat your emails like spam if your subscribers don't open your emails in the long run. This option will mark your subscribers as Inactive and MailPoet will stop sending to them."),
     'disabledBecauseTrackingIs': __('This option is disabled because tracking is disabled.'),
     'after3months': __('After 3 months (recommended if you send once a day)'),
-    'after6months': __('After 6 months (default, recommended if you send at least once a month)'),
-    'after12months': __('After 12 months'),
+    'after6months': __('After 6 months (recommended if you send at least twice a month)'),
+    'after12months': __('After 12 months (default)'),
+    'after18months': __('After 18 months'),
     'libs3rdPartyTitle': __('Load 3rd-party libraries'),
     'libs3rdPartyDescription': __('E.g. Google Fonts (used in Form Editor) and HelpScout (used for support). This needs to be enabled if you want to be able to contact support.'),
     'shareDataTitle': __('Share anonymous data'),