diff --git a/static/js/emailLibrary.js b/static/js/emailLibrary.js
index 34c8e2cd6..3747db411 100644
--- a/static/js/emailLibrary.js
+++ b/static/js/emailLibrary.js
@@ -321,6 +321,12 @@ async function _loadEmailReminderBellVisibility() {
     _syncEmailReminderBellVisibility(false);
   }
 }
+// Live-update the bell when the reminder channel changes in Settings,
+// so the user doesn't have to reopen Email to see the change apply.
+window.addEventListener('odysseus-reminder-channel-changed', (e) => {
+  const ch = e?.detail?.channel;
+  _syncEmailReminderBellVisibility(ch === 'email');
+});
 
 function _readCssPx(name) {
   const v = getComputedStyle(document.documentElement).getPropertyValue(name);
diff --git a/static/js/settings.js b/static/js/settings.js
index 5c44b299c..2dbfd3f4b 100644
--- a/static/js/settings.js
+++ b/static/js/settings.js
@@ -2645,6 +2645,9 @@ async function initReminderSettings() {
     if (hint) hint.textContent = CHANNEL_HINTS[channelSel.value] || '';
     syncChannelRows();
     save({ reminder_channel: channelSel.value });
+    // Email reminder bell visibility tracks this — broadcast so the
+    // email library can re-evaluate without waiting for a re-open.
+    try { window.dispatchEvent(new CustomEvent('odysseus-reminder-channel-changed', { detail: { channel: channelSel.value } })); } catch (_) {}
   });
   if (emailToIn) {
     let emailDebounce;