diff --git a/app/Http/Controllers/PostMarkController.php b/app/Http/Controllers/PostMarkController.php
index 1f59240a2d73..a6877b1e250c 100644
--- a/app/Http/Controllers/PostMarkController.php
+++ b/app/Http/Controllers/PostMarkController.php
@@ -12,6 +12,7 @@
 namespace App\Http\Controllers;
 
 use App\Jobs\PostMark\ProcessPostmarkWebhook;
+use App\Libraries\MultiDB;
 use App\Services\InboundMail\InboundMail;
 use App\Services\InboundMail\InboundMailEngine;
 use App\Utils\TempFile;
@@ -287,10 +288,16 @@ class PostMarkController extends BaseController
 
         if ($inboundEngine->isInvalidOrBlocked($input["From"], $input["To"])) {
             Log::info('Failed: Sender is blocked: ' . $input["From"] . " Recipient: " . $input["To"]);
-            $inboundEngine->saveMeta($input["From"], $input["To"]);
             return response()->json(['message' => 'Blocked.'], 403);
         }
 
+        $company = MultiDB::findAndSetDbByExpenseMailbox($input["To"]);
+        if (!$company) {
+            Log::info('[PostmarkInboundWebhook] unknown Expense Mailbox occured while handling an inbound email from mailgun: ' . $input["To"]);
+            $inboundEngine->saveMeta($input["From"], $input["To"], true); // important to save this, to protect from spam
+            return;
+        }
+
         try { // important to save meta if something fails here to prevent spam
 
             // prepare data for ingresEngine
@@ -316,7 +323,7 @@ class PostMarkController extends BaseController
         }
 
         // perform
-        $inboundEngine->handle($inboundMail);
+        $inboundEngine->handleExpenseMailbox($inboundMail);
 
         return response()->json(['message' => 'Success'], 200);
     }
diff --git a/app/Jobs/Brevo/ProcessBrevoInboundWebhook.php b/app/Jobs/Brevo/ProcessBrevoInboundWebhook.php
index d6fc40e6f4a0..be11b4905f0f 100644
--- a/app/Jobs/Brevo/ProcessBrevoInboundWebhook.php
+++ b/app/Jobs/Brevo/ProcessBrevoInboundWebhook.php
@@ -31,6 +31,8 @@ class ProcessBrevoInboundWebhook implements ShouldQueue
 
     public $tries = 1;
 
+    private InboundMailEngine $engine = new InboundMailEngine();
+
     /**
      * Create a new job instance.
      *
@@ -123,7 +125,7 @@ class ProcessBrevoInboundWebhook implements ShouldQueue
         foreach ($this->input["Recipients"] as $recipient) {
 
             // Spam protection
-            if ((new InboundMailEngine())->isInvalidOrBlocked($this->input["From"]["Address"], $recipient)) {
+            if ($this->engine->isInvalidOrBlocked($this->input["From"]["Address"], $recipient)) {
                 Log::info('Failed: Sender is blocked: ' . $this->input["From"]["Address"] . " Recipient: " . $recipient);
                 throw new \Error('Sender is blocked');
             }
@@ -132,7 +134,7 @@ class ProcessBrevoInboundWebhook implements ShouldQueue
             $company = MultiDB::findAndSetDbByExpenseMailbox($recipient);
             if (!$company) {
                 Log::info('[ProcessBrevoInboundWebhook] unknown Expense Mailbox occured while handling an inbound email from brevo: ' . $recipient);
-                (new InboundMailEngine())->saveMeta($this->input["From"]["Address"], $recipient); // important to save this, to protect from spam
+                // $this->engine->saveMeta($this->input["From"]["Address"], $recipient, true); // @turbo124 disabled, because recipents contains all recipients, and will likly result in false bans?! => normally important to save this, to protect from spam
                 continue;
             }
 
@@ -186,11 +188,11 @@ class ProcessBrevoInboundWebhook implements ShouldQueue
                 }
 
             } catch (\Exception $e) {
-                (new InboundMailEngine())->saveMeta($this->input["From"]["Address"], $recipient); // important to save this, to protect from spam
+                $this->engine->saveMeta($this->input["From"]["Address"], $recipient); // important to save this, to protect from spam
                 throw $e;
             }
 
-            (new InboundMailEngine())->handle($inboundMail);
+            $this->engine->handleExpenseMailbox($inboundMail);
 
         }
     }
diff --git a/app/Jobs/Mailgun/ProcessMailgunInboundWebhook.php b/app/Jobs/Mailgun/ProcessMailgunInboundWebhook.php
index 1e786f80eeac..3ac892d8d081 100644
--- a/app/Jobs/Mailgun/ProcessMailgunInboundWebhook.php
+++ b/app/Jobs/Mailgun/ProcessMailgunInboundWebhook.php
@@ -29,6 +29,8 @@ class ProcessMailgunInboundWebhook implements ShouldQueue
 
     public $tries = 1;
 
+    private InboundMailEngine $engine = new InboundMailEngine();
+
     /**
      * Create a new job instance.
      * $input consists of 3 informations: sender/from|recipient/to|messageUrl
@@ -170,7 +172,7 @@ class ProcessMailgunInboundWebhook implements ShouldQueue
         // $messageId = explode("|", $this->input)[2]; // used as base in download function
 
         // Spam protection
-        if ((new InboundMailEngine())->isInvalidOrBlocked($from, $to)) {
+        if ($this->engine->isInvalidOrBlocked($from, $to)) {
             Log::info('Failed: Sender is blocked: ' . $from . " Recipient: " . $to);
             throw new \Error('Sender is blocked');
         }
@@ -179,7 +181,7 @@ class ProcessMailgunInboundWebhook implements ShouldQueue
         $company = MultiDB::findAndSetDbByExpenseMailbox($to);
         if (!$company) {
             Log::info('[ProcessMailgunInboundWebhook] unknown Expense Mailbox occured while handling an inbound email from mailgun: ' . $to);
-            (new InboundMailEngine())->saveMeta($from, $to); // important to save this, to protect from spam
+            $this->engine->saveMeta($from, $to, true); // important to save this, to protect from spam
             return;
         }
 
@@ -276,11 +278,11 @@ class ProcessMailgunInboundWebhook implements ShouldQueue
             }
 
         } catch (\Exception $e) {
-            (new InboundMailEngine())->saveMeta($from, $to); // important to save this, to protect from spam
+            $this->engine->saveMeta($from, $to); // important to save this, to protect from spam
             throw $e;
         }
 
         // perform
-        (new InboundMailEngine())->handle($inboundMail);
+        $this->engine->handleExpenseMailbox($inboundMail);
     }
 }
diff --git a/app/Services/InboundMail/InboundMailEngine.php b/app/Services/InboundMail/InboundMailEngine.php
index cdf1fe177fb7..f5deef5a874b 100644
--- a/app/Services/InboundMail/InboundMailEngine.php
+++ b/app/Services/InboundMail/InboundMailEngine.php
@@ -46,21 +46,20 @@ class InboundMailEngine
      * if there is not a company with an matching mailbox, we only do monitoring
      * reuse this method to add more mail-parsing behaviors
      */
-    public function handle(InboundMail $email)
+    public function handleExpenseMailbox(InboundMail $email)
     {
         if ($this->isInvalidOrBlocked($email->from, $email->to))
             return;
 
-        $isUnknownRecipent = true;
-
         // Expense Mailbox => will create an expense
         $company = MultiDB::findAndSetDbByExpenseMailbox($email->to);
-        if ($company) {
-            $isUnknownRecipent = false;
-            $this->createExpense($company, $email);
+        if (!$company) {
+            $this->saveMeta($email->from, $email->to, true);
+            return;
         }
 
-        $this->saveMeta($email->from, $email->to, $isUnknownRecipent);
+        $this->createExpense($company, $email);
+        $this->saveMeta($email->from, $email->to);
     }
 
     // SPAM Protection