diff --git a/app/agenda/page.tsx b/app/agenda/page.tsx
index 5351589..e24f422 100644
--- a/app/agenda/page.tsx
+++ b/app/agenda/page.tsx
@@ -448,6 +448,7 @@ export default async function CalendarPage() {
           });
 
           // Create sync configuration
+          // Use 5 minutes for Microsoft (more reactive than 15 minutes)
           await prisma.calendarSync.create({
             data: {
               calendarId: calendar.id,
@@ -456,7 +457,7 @@ export default async function CalendarPage() {
               externalCalendarId: mainCalendar.id,
               externalCalendarUrl: mainCalendar.webLink || mainCalendar.id,
               syncEnabled: true,
-              syncFrequency: 15
+              syncFrequency: 5
             }
           });
 
@@ -571,17 +572,26 @@ export default async function CalendarPage() {
 
   // Trigger sync for Microsoft calendars that need it (async, don't wait)
   for (const syncConfig of microsoftSyncConfigs) {
-    const needsSync = !syncConfig.lastSyncAt || 
-      (Date.now() - syncConfig.lastSyncAt.getTime()) / (1000 * 60) >= syncConfig.syncFrequency;
+    // For Microsoft, use a more frequent check (2 minutes) for better reactivity
+    // This allows new events to appear faster without overloading the API
+    const microsoftMinSyncInterval = 2; // minutes
+    const minutesSinceLastSync = syncConfig.lastSyncAt 
+      ? (Date.now() - syncConfig.lastSyncAt.getTime()) / (1000 * 60)
+      : Infinity;
     
-    console.log(`[AGENDA] Microsoft sync config ${syncConfig.id}: lastSyncAt=${syncConfig.lastSyncAt}, needsSync=${needsSync}, syncFrequency=${syncConfig.syncFrequency}`);
+    // Sync if never synced, or if enough time has passed (use minimum of 2 min or configured frequency)
+    const needsSync = !syncConfig.lastSyncAt || 
+      minutesSinceLastSync >= Math.min(microsoftMinSyncInterval, syncConfig.syncFrequency);
+    
+    console.log(`[AGENDA] Microsoft sync config ${syncConfig.id}: lastSyncAt=${syncConfig.lastSyncAt}, minutesSinceLastSync=${minutesSinceLastSync.toFixed(1)}, needsSync=${needsSync}, syncFrequency=${syncConfig.syncFrequency}`);
     
     if (needsSync) {
       console.log(`[AGENDA] Triggering background sync for Microsoft calendar ${syncConfig.id}`);
       // Trigger sync in background (don't await to avoid blocking page load)
       // The sync will update the database, and the next page load will show the events
+      // Use forceSync=true because we've already checked that sync is needed
       import('@/lib/services/microsoft-calendar-sync').then(({ syncMicrosoftCalendar }) => {
-        syncMicrosoftCalendar(syncConfig.id, false).then((result) => {
+        syncMicrosoftCalendar(syncConfig.id, true).then((result) => {
           console.log(`[AGENDA] Microsoft sync completed:`, {
             calendarSyncId: syncConfig.id,
             synced: result.synced,
@@ -597,7 +607,7 @@ export default async function CalendarPage() {
         });
       });
     } else {
-      console.log(`[AGENDA] Microsoft sync skipped - too soon since last sync (${syncConfig.syncFrequency} min)`);
+      console.log(`[AGENDA] Microsoft sync skipped - too soon since last sync (${minutesSinceLastSync.toFixed(1)} min < ${Math.min(microsoftMinSyncInterval, syncConfig.syncFrequency)} min)`);
     }
   }
 
diff --git a/app/api/calendars/sync/route.ts b/app/api/calendars/sync/route.ts
index a0a617d..17aec06 100644
--- a/app/api/calendars/sync/route.ts
+++ b/app/api/calendars/sync/route.ts
@@ -75,6 +75,9 @@ export async function POST(req: NextRequest) {
     }
 
     // Create or update sync configuration
+    // Use different default frequencies: 5 min for Microsoft (more reactive), 15 min for others
+    const defaultSyncFrequency = detectedProvider === 'microsoft' ? 5 : (syncFrequency || 15);
+    
     const syncConfig = await prisma.calendarSync.upsert({
       where: { calendarId },
       create: {
@@ -84,14 +87,14 @@ export async function POST(req: NextRequest) {
         externalCalendarId: externalCalendarId || null,
         externalCalendarUrl,
         syncEnabled: true,
-        syncFrequency: syncFrequency || 15,
+        syncFrequency: syncFrequency || defaultSyncFrequency,
       },
       update: {
         mailCredentialId,
         provider: detectedProvider,
         externalCalendarId: externalCalendarId || null,
         externalCalendarUrl,
-        syncFrequency: syncFrequency || 15,
+        syncFrequency: syncFrequency || defaultSyncFrequency,
         syncEnabled: true,
       },
     });