diff --git a/app/Console/Commands/ResendSyncLeadsCommand.php b/app/Console/Commands/ResendSyncLeadsCommand.php
index f28daa78..d9b4515e 100644
--- a/app/Console/Commands/ResendSyncLeadsCommand.php
+++ b/app/Console/Commands/ResendSyncLeadsCommand.php
@@ -8,12 +8,14 @@ use Illuminate\Console\Attributes\Description;
 use Illuminate\Console\Attributes\Signature;
 use Illuminate\Console\Command;
 
-#[Signature('resend:sync-leads')]
-#[Description('Sync all user leads to the Resend leads segment')]
+#[Signature('resend:sync-leads {--since=24 : Sync leads created within the last N hours. Use 0 to sync all.}')]
+#[Description('Sync user leads to the Resend leads segment (last 24h by default)')]
 class ResendSyncLeadsCommand extends Command
 {
     public function handle(ResendService $resendService): int
     {
+        $since = (int) $this->option('since');
+
         if (! config('services.resend.key')) {
             $this->error('Resend API key not configured.');
 
@@ -28,6 +30,7 @@ class ResendSyncLeadsCommand extends Command
 
         $leads = UserLead::query()
             ->whereNotNull('email_verified_at')
+            ->when($since > 0, fn ($query) => $query->where('created_at', '>=', now()->subHours($since)))
             ->get();
 
         if ($leads->isEmpty()) {
diff --git a/tests/Feature/ResendSyncLeadsCommandTest.php b/tests/Feature/ResendSyncLeadsCommandTest.php
index 42e1aeca..47dc0c13 100644
--- a/tests/Feature/ResendSyncLeadsCommandTest.php
+++ b/tests/Feature/ResendSyncLeadsCommandTest.php
@@ -9,20 +9,39 @@ use function Pest\Laravel\mock;
 
 const TEST_RESEND_LEADS_SEGMENT_ID = 'test-segment-id';
 
-test('resend:sync-leads syncs all user leads to resend', function () {
+test('resend:sync-leads syncs leads created in the last 24h by default', function () {
     config([
         'services.resend.key' => 'test-api-key',
         'services.resend.leads_segment_id' => TEST_RESEND_LEADS_SEGMENT_ID,
     ]);
 
-    UserLead::factory()->count(3)->create();
+    UserLead::factory()->count(2)->create();
+    UserLead::factory()->count(3)->create(['created_at' => now()->subDays(2)]);
 
     $resendService = mock(ResendService::class);
-    $resendService->shouldReceive('syncLead')->times(3);
+    $resendService->shouldReceive('syncLead')->times(2);
 
     artisan('resend:sync-leads')
-        ->expectsOutputToContain('Syncing 3 user leads to Resend...')
-        ->expectsOutputToContain('Synced 3 user leads to Resend.')
+        ->expectsOutputToContain('Syncing 2 user leads to Resend...')
+        ->expectsOutputToContain('Synced 2 user leads to Resend.')
+        ->assertSuccessful();
+});
+
+test('resend:sync-leads syncs all leads when --since=0', function () {
+    config([
+        'services.resend.key' => 'test-api-key',
+        'services.resend.leads_segment_id' => TEST_RESEND_LEADS_SEGMENT_ID,
+    ]);
+
+    UserLead::factory()->count(2)->create();
+    UserLead::factory()->count(3)->create(['created_at' => now()->subDays(2)]);
+
+    $resendService = mock(ResendService::class);
+    $resendService->shouldReceive('syncLead')->times(5);
+
+    artisan('resend:sync-leads', ['--since' => 0])
+        ->expectsOutputToContain('Syncing 5 user leads to Resend...')
+        ->expectsOutputToContain('Synced 5 user leads to Resend.')
         ->assertSuccessful();
 });