diff --git a/VERSION b/VERSION
index f5301e2..b500665 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.3.47
+1.3.48
diff --git a/app/Livewire/Admin/Overview.php b/app/Livewire/Admin/Overview.php
index 87435ca..bc5e15a 100644
--- a/app/Livewire/Admin/Overview.php
+++ b/app/Livewire/Admin/Overview.php
@@ -382,6 +382,23 @@ class Overview extends Component
             ];
         }
 
+        // MAIL_MAILER=log. Every purpose mailer short-circuits to the log
+        // transport then — see MailboxTransport::NON_DELIVERING — however well
+        // the mailboxes are configured, and nothing is delivered to anybody.
+        //
+        // Worth its own notice because the failure is SILENT in every direction:
+        // the queue reports success, no job fails, the console's own mailbox test
+        // reports success (MailboxTester builds its own transport on purpose), and
+        // the mail sits in storage/logs. Somebody registering and waiting for a
+        // verification mail has no way to find that out. Asked exactly that way.
+        if (in_array(config('mail.default'), ['log', 'array', null], true)) {
+            $notices[] = [
+                'level' => 'warning',
+                'text' => __('admin.notice.mail_not_delivering', ['mailer' => (string) (config('mail.default') ?? 'null')]),
+                'route' => 'admin.mail',
+            ];
+        }
+
         // No SITE_HOST. The marketing site is then registered without a
         // hostname, so it answers on the PORTAL's host as well — and every
         // route() it generates points at APP_URL, which is why a link on the
diff --git a/lang/de/admin.php b/lang/de/admin.php
index 74e1715..4fb00d9 100644
--- a/lang/de/admin.php
+++ b/lang/de/admin.php
@@ -88,6 +88,7 @@ return [
     ],
 
     'notice' => [
+        'mail_not_delivering' => 'MAIL_MAILER steht auf „:mailer“ — es wird keine E-Mail zugestellt, alles landet in storage/logs. Auch der Postfach-Test meldet trotzdem Erfolg, weil er seinen eigenen Weg nimmt.',
         'site_hidden' => 'Website und Kundenbereich sind ausgeblendet — Besucher außerhalb des VPN bekommen die Platzhalterseite (503). Umschalten unter Einstellungen → Installation.',
         'no_site_host' => 'SITE_HOST ist nicht gesetzt. Die Website antwortet dadurch auch auf :app, und Links auf ihr zeigen dorthin statt auf den eigenen Namen.',
         'no_capacity' => 'Kein Host hat noch Platz für „:plan“ — das Paket braucht :needs GB, der freieste Host hat :largest GB. Eine bezahlte Bestellung dafür würde bei der Reservierung scheitern.',
diff --git a/lang/en/admin.php b/lang/en/admin.php
index a2098cd..b6fbe70 100644
--- a/lang/en/admin.php
+++ b/lang/en/admin.php
@@ -88,6 +88,7 @@ return [
     ],
 
     'notice' => [
+        'mail_not_delivering' => 'MAIL_MAILER is set to ":mailer" — no mail is delivered to anybody, it all goes to storage/logs. The mailbox test still reports success, because it builds its own transport.',
         'site_hidden' => 'The website and the customer portal are hidden — a visitor outside the VPN gets the placeholder page (503). The switch is under Settings → Installation.',
         'no_site_host' => 'SITE_HOST is not set. The website therefore also answers on :app, and links on it point there instead of at its own name.',
         'no_capacity' => 'No host has room for “:plan” any more — the package needs :needs GB and the roomiest host has :largest GB. A paid order for it would fail at reservation.',
diff --git a/resources/views/livewire/admin/mail.blade.php b/resources/views/livewire/admin/mail.blade.php
index 3b00c8e..e491f38 100644
--- a/resources/views/livewire/admin/mail.blade.php
+++ b/resources/views/livewire/admin/mail.blade.php
@@ -4,6 +4,19 @@
         <p class="mt-1 text-sm text-muted">{{ __('mail_settings.subtitle') }}</p>
     </div>
 
+    {{-- The one thing that makes every mailbox on this page decorative. Said
+         here as well as on the front page, because this is where somebody comes
+         to find out why no mail arrived — and the test button below reports
+         success regardless, since MailboxTester builds its own transport on
+         purpose (a check that honoured MAIL_MAILER=log would report success
+         while writing to a file). --}}
+    @if (in_array(config('mail.default'), ['log', 'array', null], true))
+        <x-ui.alert variant="warning">
+            {{ __('admin.notice.mail_not_delivering', ['mailer' => (string) (config('mail.default') ?? 'null')]) }}
+        </x-ui.alert>
+    @endif
+
+
     @if (! $usable)
         <x-ui.alert variant="warning">{{ __('mail_settings.no_key') }}</x-ui.alert>
     @endif
diff --git a/tests/Feature/Admin/ConsoleReportsRealDataTest.php b/tests/Feature/Admin/ConsoleReportsRealDataTest.php
index 1ae3419..8452747 100644
--- a/tests/Feature/Admin/ConsoleReportsRealDataTest.php
+++ b/tests/Feature/Admin/ConsoleReportsRealDataTest.php
@@ -25,6 +25,12 @@ it('reports an empty estate as empty, not as a going concern', function () {
     // console still claimed 42 customers, 39 instances, 4 hosts and €7,842 a
     // month. The figures are asserted directly rather than searched for in the
     // markup — "42" also occurs inside Livewire's own component ids.
+    //
+    // The mailer is pinned to a delivering one: phpunit.xml forces
+    // MAIL_MAILER=array so a test suite cannot send mail, and the console
+    // rightly warns that nothing is being delivered. That warning is about the
+    // ENVIRONMENT, not about the estate, and this test is about an empty estate.
+    config()->set('mail.default', 'smtp');
     Livewire::actingAs(operator('Owner'), 'operator')
         ->test(Overview::class)
         ->assertViewHas('kpis', function (array $kpis) {
@@ -107,6 +113,10 @@ it('states monthly revenue off the contracts, with a yearly term divided', funct
 });
 
 it('raises a notice only when something is actually wrong', function () {
+    // See above: the test suite deliberately delivers no mail, and the console
+    // says so. Pinned here so "clean" means an estate with nothing wrong in it.
+    config()->set('mail.default', 'smtp');
+
     $clean = Livewire::actingAs(operator('Owner'), 'operator')->test(Overview::class);
     $clean->assertSee(__('admin.systems_ok'));
 
diff --git a/tests/Feature/Admin/MailRegisterTest.php b/tests/Feature/Admin/MailRegisterTest.php
index 25b4572..1093418 100644
--- a/tests/Feature/Admin/MailRegisterTest.php
+++ b/tests/Feature/Admin/MailRegisterTest.php
@@ -300,3 +300,50 @@ it('says when the website has no hostname of its own', function () {
         ->test(Overview::class)
         ->assertDontSee(__('admin.notice.no_site_host', ['app' => 'app.dev.example.test']));
 });
+
+it('says when no mail is being delivered at all', function () {
+    // The report: "ich versuche mich zu registrieren, erhalte aber keine Verify-
+    // Mail, auch nicht beim erneuten Senden". MAIL_MAILER=log short-circuits
+    // every purpose mailer to the log transport (MailboxTransport::
+    // NON_DELIVERING) however well the mailboxes are configured — and the
+    // failure is silent in every direction: the queue reports success, no job
+    // fails, and the console's own mailbox test reports success too because it
+    // builds its own transport on purpose. Nothing on any page said so.
+    config()->set('mail.default', 'log');
+
+    Livewire::actingAs(operator('Owner'), 'operator')
+        ->test(Overview::class)
+        ->assertSee(__('admin.notice.mail_not_delivering', ['mailer' => 'log']))
+        ->assertSee(route('admin.mail'), false);
+
+    // And on the page somebody actually opens to find out why.
+    Livewire::actingAs(operator('Owner'), 'operator')
+        ->test(App\Livewire\Admin\Mail::class)
+        ->assertSee(__('admin.notice.mail_not_delivering', ['mailer' => 'log']));
+});
+
+it('stays quiet once mail really goes out', function () {
+    config()->set('mail.default', 'smtp');
+
+    Livewire::actingAs(operator('Owner'), 'operator')
+        ->test(Overview::class)
+        ->assertDontSee(__('admin.notice.mail_not_delivering', ['mailer' => 'log']));
+});
+
+it('names every mailer that swallows mail, not only the log one', function () {
+    // array and an unset default do the same thing, and the transport already
+    // treats all three alike. A notice that only knew about 'log' would be
+    // silent in the two cases nobody thinks to check.
+    $swallowing = (new ReflectionClass(App\Mail\Transport\MailboxTransport::class))
+        ->getConstant('NON_DELIVERING');
+
+    expect($swallowing)->toBe(['log', 'array', null]);
+
+    foreach (['array', null] as $mailer) {
+        config()->set('mail.default', $mailer);
+
+        Livewire::actingAs(operator('Owner'), 'operator')
+            ->test(Overview::class)
+            ->assertSee(__('admin.notice.mail_not_delivering', ['mailer' => $mailer ?? 'null']));
+    }
+});