diff --git a/app/Console/Commands/SendInactivityReminders.php b/app/Console/Commands/SendInactivityReminders.php
new file mode 100644
index 0000000..40fe278
--- /dev/null
+++ b/app/Console/Commands/SendInactivityReminders.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\User;
+use App\Notifications\InactivityReminder;
+use Illuminate\Console\Command;
+
+class SendInactivityReminders extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'app:send-inactivity-reminders {--inactive-days=5} {--cooldown-days=7}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Email users who have not completed a workout session recently, at most once per cooldown period';
+
+    /**
+     * Execute the console command.
+     */
+    public function handle(): int
+    {
+        $inactiveSince = now()->subDays((int) $this->option('inactive-days'));
+        $cooldownSince = now()->subDays((int) $this->option('cooldown-days'));
+
+        $users = User::query()
+            ->whereNotNull('email_verified_at')
+            ->where('created_at', '<=', $inactiveSince)
+            ->whereDoesntHave('workoutSessions', function ($q) use ($inactiveSince) {
+                $q->whereNotNull('completed_at')->where('completed_at', '>=', $inactiveSince);
+            })
+            ->where(function ($q) use ($cooldownSince) {
+                $q->whereNull('last_reminder_sent_at')->orWhere('last_reminder_sent_at', '<', $cooldownSince);
+            })
+            ->get();
+
+        foreach ($users as $user) {
+            $user->notify(new InactivityReminder());
+            $user->last_reminder_sent_at = now();
+            $user->save();
+        }
+
+        $this->info("Sent inactivity reminders to {$users->count()} user(s).");
+
+        return self::SUCCESS;
+    }
+}
diff --git a/app/Models/User.php b/app/Models/User.php
index f317748..be2c4a9 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -74,6 +74,11 @@ class User extends Authenticatable
         return $this->hasMany(Program::class);
     }
 
+    public function workoutSessions()
+    {
+        return $this->hasMany(WorkoutSession::class);
+    }
+
     // Trainer/client relationships
     public function clients()
     {
diff --git a/app/Notifications/InactivityReminder.php b/app/Notifications/InactivityReminder.php
new file mode 100644
index 0000000..94b5c77
--- /dev/null
+++ b/app/Notifications/InactivityReminder.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Notifications;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+
+class InactivityReminder extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @return array<int, string>
+     */
+    public function via(object $notifiable): array
+    {
+        return ['mail'];
+    }
+
+    /**
+     * Get the mail representation of the notification.
+     */
+    public function toMail(object $notifiable): MailMessage
+    {
+        return (new MailMessage)
+            ->subject("We haven't seen you in a while, {$notifiable->name}")
+            ->line('It has been a few days since your last completed workout.')
+            ->line('A short session today is better than a perfect one you keep putting off.')
+            ->action('Start a Workout', route('workouts.index'))
+            ->line('See you back soon!');
+    }
+}
diff --git a/database/migrations/2026_08_10_093017_add_last_reminder_sent_at_to_users_table.php b/database/migrations/2026_08_10_093017_add_last_reminder_sent_at_to_users_table.php
new file mode 100644
index 0000000..e9e6ecb
--- /dev/null
+++ b/database/migrations/2026_08_10_093017_add_last_reminder_sent_at_to_users_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->timestamp('last_reminder_sent_at')->nullable()->after('minutes_per_session');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('last_reminder_sent_at');
+        });
+    }
+};
diff --git a/routes/console.php b/routes/console.php
index 3c9adf1..e8893fd 100644
--- a/routes/console.php
+++ b/routes/console.php
@@ -2,7 +2,10 @@
 
 use Illuminate\Foundation\Inspiring;
 use Illuminate\Support\Facades\Artisan;
+use Illuminate\Support\Facades\Schedule;
 
 Artisan::command('inspire', function () {
     $this->comment(Inspiring::quote());
 })->purpose('Display an inspiring quote');
+
+Schedule::command('app:send-inactivity-reminders')->dailyAt('09:00');
diff --git a/tests/Feature/SendInactivityRemindersTest.php b/tests/Feature/SendInactivityRemindersTest.php
new file mode 100644
index 0000000..a46f9fb
--- /dev/null
+++ b/tests/Feature/SendInactivityRemindersTest.php
@@ -0,0 +1,108 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\User;
+use App\Models\Workout;
+use App\Models\WorkoutSession;
+use App\Notifications\InactivityReminder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Notification;
+use Tests\TestCase;
+
+class SendInactivityRemindersTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_it_reminds_a_verified_inactive_user(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->create([
+            'email_verified_at' => now()->subDays(10),
+            'created_at' => now()->subDays(10),
+        ]);
+
+        $this->artisan('app:send-inactivity-reminders')->assertSuccessful();
+
+        Notification::assertSentTo($user, InactivityReminder::class);
+        $this->assertNotNull($user->fresh()->last_reminder_sent_at);
+    }
+
+    public function test_it_does_not_remind_a_user_with_a_recent_completed_session(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->create([
+            'email_verified_at' => now()->subDays(10),
+            'created_at' => now()->subDays(10),
+        ]);
+        $workout = Workout::factory()->create(['user_id' => $user->id]);
+        WorkoutSession::factory()->create([
+            'user_id' => $user->id,
+            'workout_id' => $workout->id,
+            'completed_at' => now()->subDay(),
+        ]);
+
+        $this->artisan('app:send-inactivity-reminders');
+
+        Notification::assertNotSentTo($user, InactivityReminder::class);
+    }
+
+    public function test_it_does_not_remind_a_user_still_within_the_cooldown(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->create([
+            'email_verified_at' => now()->subDays(10),
+            'created_at' => now()->subDays(10),
+            'last_reminder_sent_at' => now()->subDays(2),
+        ]);
+
+        $this->artisan('app:send-inactivity-reminders');
+
+        Notification::assertNotSentTo($user, InactivityReminder::class);
+    }
+
+    public function test_it_reminds_again_once_the_cooldown_has_passed(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->create([
+            'email_verified_at' => now()->subDays(10),
+            'created_at' => now()->subDays(10),
+            'last_reminder_sent_at' => now()->subDays(8),
+        ]);
+
+        $this->artisan('app:send-inactivity-reminders');
+
+        Notification::assertSentTo($user, InactivityReminder::class);
+    }
+
+    public function test_it_does_not_remind_an_unverified_user(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->unverified()->create([
+            'created_at' => now()->subDays(10),
+        ]);
+
+        $this->artisan('app:send-inactivity-reminders');
+
+        Notification::assertNotSentTo($user, InactivityReminder::class);
+    }
+
+    public function test_it_does_not_remind_a_brand_new_user(): void
+    {
+        Notification::fake();
+
+        $user = User::factory()->create([
+            'email_verified_at' => now(),
+            'created_at' => now(),
+        ]);
+
+        $this->artisan('app:send-inactivity-reminders');
+
+        Notification::assertNotSentTo($user, InactivityReminder::class);
+    }
+}