diff --git a/web/modals/threads/notifications/notifications-modal.css b/web/modals/threads/notifications/notifications-modal.css
new file mode 100644
--- /dev/null
+++ b/web/modals/threads/notifications/notifications-modal.css
@@ -0,0 +1,14 @@
+div.optionInfo {
+  display: flex;
+  align-items: center;
+  column-gap: 4px;
+}
+
+div.optionInfoInvalid {
+  text-decoration: line-through;
+  color: var(--notification-settings-option-invalid-color);
+}
+
+div.optionContainerSelected div.optionInfoInvalid {
+  color: var(--notification-settings-option-invalid-selected-color);
+}
diff --git a/web/modals/threads/notifications/notifications-option-info.react.js b/web/modals/threads/notifications/notifications-option-info.react.js
new file mode 100644
--- /dev/null
+++ b/web/modals/threads/notifications/notifications-option-info.react.js
@@ -0,0 +1,37 @@
+// @flow
+
+import classnames from 'classnames';
+import * as React from 'react';
+
+import SWMansionIcon from '../../../SWMansionIcon.react';
+import css from './notifications-modal.css';
+
+type Props = {
+  +valid: boolean,
+  +children: React.Node,
+};
+
+function NotificationsOptionInfo(props: Props): React.Node {
+  const { valid, children } = props;
+
+  const optionInfoClasses = React.useMemo(
+    () =>
+      classnames(css.optionInfo, {
+        [css.optionInfoInvalid]: !valid,
+      }),
+    [valid],
+  );
+
+  const icon = React.useMemo(
+    () => <SWMansionIcon icon={valid ? 'check' : 'cross'} size={12} />,
+    [valid],
+  );
+  return (
+    <div className={optionInfoClasses}>
+      {icon}
+      {children}
+    </div>
+  );
+}
+
+export default NotificationsOptionInfo;
diff --git a/web/theme.css b/web/theme.css
--- a/web/theme.css
+++ b/web/theme.css
@@ -161,4 +161,6 @@
   --add-members-remove-pending-color-hover: var(--error-light-50);
   --radio-border: var(--shades-black-70);
   --radio-color: var(--shades-white-60);
+  --notification-settings-option-invalid-color: var(--shades-black-80);
+  --notification-settings-option-invalid-selected-color: var(--shades-black-60);
 }