diff --git a/app/Http/Controllers/Api/MailController.php b/app/Http/Controllers/Api/MailController.php
index 376c4c8..862dd03 100644
--- a/app/Http/Controllers/Api/MailController.php
+++ b/app/Http/Controllers/Api/MailController.php
@@ -3,6 +3,7 @@
 namespace App\Http\Controllers\Api;
 
 use App\Http\Controllers\Controller;
+use App\Http\Option;
 use App\Mail\InvoiceMail;
 use App\Models\Invoice;
 use App\TenantMail;
@@ -36,6 +37,15 @@ class MailController extends Controller
         $invoiceMail->subject($request->Subject);
         $invoiceMail->body = $request->Body;
 
+        $options = Option::optionsAsObject();
+        if (property_exists($options, 'bcc_copy')) {
+            if (is_null($request->Bcc)) {
+                $request->Bcc = $options->email;
+            } else {
+                $request->Bcc .= "," . $options->email;
+            }
+        }
+
         try {
             $this->mailer->to($request->To)
                 ->cc($request->Cc)
diff --git a/lang/de/common.php b/lang/de/common.php
index a35e61f..30c550e 100644
--- a/lang/de/common.php
+++ b/lang/de/common.php
@@ -38,5 +38,6 @@ return [
     'Email-Cc' => 'Cc',
     'Email-Subject' => 'Betreff',
     'Email-Body' => 'Nachricht',
+    'Tooltip multiple email' => 'Mehrere E-Mail-Adressen werden durch "," (Komma) von einander getrennt.',
 
 ];
diff --git a/lang/de/configuration.php b/lang/de/configuration.php
index f29571b..3e082c3 100644
--- a/lang/de/configuration.php
+++ b/lang/de/configuration.php
@@ -51,5 +51,18 @@ return [
     'Mail encryption' => 'Verschlüsselung',
     'Mail username' => 'Benutzername',
     'Mail password' => 'Passwort',
+    'Bcc copy' => 'Kopie als Bcc erhalten',
+    'Tooltip representative' => 'Wird beim Email Versand als Absender Name verwendet.',
+    'Tooltip email' => 'Wird beim Email Versand als Absender Adresse verwendet.',
+    'Tooltip color 1' => 'Diese Farbe wird im Schriftverkehr (PDF) für die Email Adresse und die Homepage verwendet.',
+    'Tooltip color 2' => 'Diese Farbe wird im Schriftverkehr (PDF) für das Tätigkeitsfeld verwendet.',
+    'Tooltip Mail transport' => 'Transport Protokoll für den Email Versand.<br/>Normalerweise <b>"smtp"</b>',
+    'Tooltip Mail host' => 'Adresse des Email Servers, z.B.:<br/>smtp.gmail.com<br/>mail.gmx.net',
+    'Tooltip Mail port' => 'Port des Email Servers, z.B.:<br/>587 (Verschlüsselung tls)<br/>465 (Verschlüsselung ssl)<br/><b>Entsprechend zutreffendes Verschlüsselungsverfahren unten eintragen.</b>',
+    'Tooltip Mail encryption' => 'Verschlüsselungsverfahren für die Übertragung von Emails<br/>ssl, tls oder leer lassen für unverschlüsselte Übertragung (nicht empfohlen).',
+    'Tooltip Mail username' => 'Meist die Email Adresse.',
+    'Tooltip Mail password' => 'Das Passwort um Deine Emails abzurufen.',
+    'Tooltip Bcc copy' => 'Die Email Übertragung per smtp lässt eine Speicherung der Nachricht in ihrem Postfach nicht zu.<br/>Falls Du eine Kopie der Nachricht in Deinem Postfach erhalten willst, kannst Du die Nachricht als Bcc Empfänger erhalten.',
+
 
 ];
diff --git a/lang/de/invoice.php b/lang/de/invoice.php
index 5cd2683..43a46dc 100644
--- a/lang/de/invoice.php
+++ b/lang/de/invoice.php
@@ -49,7 +49,7 @@ return [
     'Mail' => 'E-Mail',
     'Send email to your customer with attachments.' => 'E-Mail mit Anlagen an den Kunden versenden.',
     'Invoice body' => 'Sehr geehrte Kundin, sehr geehrter Kunde\n\nim Anhang erhalten Sie die Rechnung :invoice_number.\n\nMit freundlichen Grüßen',
-    'Send Pdf' => 'Rechnung als Pdf versenden',
-    'Send Xml' => 'Rechnung als Xml versenden',
+    'Send Pdf' => 'Rechnung als Pdf anhängen',
+    'Send Xml' => 'Rechnung als Xml anhängen',
 
 ];
diff --git a/resources/views/components/info-icon.blade.php b/resources/views/components/info-icon.blade.php
new file mode 100644
index 0000000..513d3af
--- /dev/null
+++ b/resources/views/components/info-icon.blade.php
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" {{ $attributes->merge(['class' => 'size-8 p-1']) }}>
+    <path stroke-linecap="round" stroke-linejoin="round" d="m11.25 11.25.041-.02a.75.75 0 0 1 1.063.852l-.708 2.836a.75.75 0 0 0 1.063.853l.041-.021M21 12a9 9 0 1 1-18 0 9 9 0 0 1 18 0Zm-9-3.75h.008v.008H12V8.25Z" />
+</svg>
diff --git a/resources/views/components/tooltip.blade.php b/resources/views/components/tooltip.blade.php
new file mode 100644
index 0000000..c9e2f84
--- /dev/null
+++ b/resources/views/components/tooltip.blade.php
@@ -0,0 +1,11 @@
+<div
+    x-data="{ tooltip: false }"
+    x-on:mouseover="tooltip = true"
+    x-on:mouseleave="tooltip = false"
+    {{ $attributes->merge(['class' => 'size-8 cursor-pointer']) }}>
+    <x-info-icon/>
+    <div x-show="tooltip"
+         class="text-sm text-white absolute bg-gray-900 rounded-lg p-2 transform -translate-y-8 translate-x-8">
+        {{$slot}}
+    </div>
+</div>
diff --git a/resources/views/invoice/mail.blade.php b/resources/views/invoice/mail.blade.php
index 02f7c5e..b68b380 100644
--- a/resources/views/invoice/mail.blade.php
+++ b/resources/views/invoice/mail.blade.php
@@ -24,21 +24,33 @@
 
                         <form class="mt-6 space-y-6" @submit.prevent="">
                             <div class="flex flex-row items-center">
-                                <x-input-label for="To" :value="__('common.Email-To')" class="w-1/4"/>
+                                <div class="w-1/4 flex flex-row items-center">
+                                    <x-input-label for="To"
+                                                   :value="__('common.Email-To')"/>
+                                    <x-tooltip>{!! __('common.Tooltip multiple email') !!}</x-tooltip>
+                                </div>
                                 <x-text-input id="To" name="To" type="email" class="mt-1 block w-full"
                                               :value="old('To')" required multiple autocomplete="To"
                                               x-model="data.To"/>
                             </div>
 
                             <div class="flex flex-row items-center">
-                                <x-input-label for="Cc" :value="__('common.Email-Cc')" class="w-1/4"/>
+                                <div class="w-1/4 flex flex-row items-center">
+                                    <x-input-label for="Cc"
+                                                   :value="__('common.Email-Cc')"/>
+                                    <x-tooltip>{!! __('common.Tooltip multiple email') !!}</x-tooltip>
+                                </div>
                                 <x-text-input id="Cc" name="Cc" type="email" class="mt-1 block w-full"
                                               :value="old('Cc')" multiple autocomplete="Cc"
                                               x-model="data.Cc"/>
                             </div>
 
                             <div class="flex flex-row items-center">
-                                <x-input-label for="Bcc" :value="__('common.Email-Bcc')" class="w-1/4"/>
+                                <div class="w-1/4 flex flex-row items-center">
+                                    <x-input-label for="Bcc"
+                                                   :value="__('common.Email-Bcc')"/>
+                                    <x-tooltip>{!! __('common.Tooltip multiple email') !!}</x-tooltip>
+                                </div>
                                 <x-text-input id="Bcc" name="Bcc" type="email" class="mt-1 block w-full"
                                               :value="old('Bcc')" multiple autocomplete="Bcc"
                                               x-model="data.Bcc"/>
diff --git a/resources/views/option/index.blade.php b/resources/views/option/index.blade.php
index ddb9fe6..949279c 100644
--- a/resources/views/option/index.blade.php
+++ b/resources/views/option/index.blade.php
@@ -28,8 +28,7 @@
                                     <div class="w-full flex flex-row" x-show="options.company_logo != null">
                                         <img class="w-1/4" :src="options.company_logo"/>
                                         <div class="ml-12">
-                                            <x-primary-button class=""
-                                                              @click="clearPreview()">{{ __('form.Change') }}</x-primary-button>
+                                            <x-primary-button @click="clearPreview()">{{ __('form.Change') }}</x-primary-button>
                                         </div>
                                     </div>
                                 </div>
@@ -53,8 +52,11 @@
                                                   x-model="options.company_additional"/>
                                 </div>
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="representative"
-                                                   :value="__('configuration.Representative')"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="representative"
+                                                       :value="__('configuration.Representative')"/>
+                                        <x-tooltip>{{ __('configuration.Tooltip representative') }}</x-tooltip>
+                                    </div>
                                     <x-text-input id="representative" name="representative" type="text"
                                                   class="mt-1 block w-full"
                                                   :value="old('representative')" required autofocus
@@ -86,7 +88,11 @@
                                                   x-model="options.phone"/>
                                 </div>
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="email" :value="__('configuration.Email')"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="email"
+                                                       :value="__('configuration.Email')"/>
+                                        <x-tooltip>{{ __('configuration.Tooltip email') }}</x-tooltip>
+                                    </div>
                                     <x-text-input id="email" name="email" type="email" class="mt-1 block w-full"
                                                   :value="old('email')" required autofocus autocomplete="email"
                                                   x-model="options.email"/>
@@ -209,8 +215,11 @@
                             </summary>
                             <form class="mt-6 space-y-2" @submit.prevent="">
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="color_1"
-                                                   :value="__('configuration.Color'). ' 1'"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="color_1"
+                                                       :value="__('configuration.Color'). ' 1'"/>
+                                        <x-tooltip>{{ __('configuration.Tooltip color 1') }}</x-tooltip>
+                                    </div>
                                     <x-text-input id="color_1" name="color_1" type="color"
                                                   class="mt-1 block"
                                                   :value="old('color_1')" required autofocus
@@ -218,8 +227,11 @@
                                                   x-model="options.color_1"/>
                                 </div>
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="color_2"
-                                                   :value="__('configuration.Color'). ' 2'"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="color_2"
+                                                       :value="__('configuration.Color'). ' 2'"/>
+                                        <x-tooltip>{{ __('configuration.Tooltip color 2') }}</x-tooltip>
+                                    </div>
                                     <x-text-input id="color_2" name="color_2" type="color"
                                                   class="mt-1 block"
                                                   :value="old('color_2')" required autofocus
@@ -234,14 +246,6 @@
             </div>
 
             <!-- Mail derlivery -->
-            <!--
-                'transport' => $options->mail_transport,
-                'host' => $options->mail_host,
-                'port' => $options->mail_port,
-                'encryption' => $options->mail_encryption,
-                'username' => $options->mail_username,
-                'password' => $options->mail_password,
-            -->
             <div class="p-4 sm:p-8 bg-white dark:bg-gray-800 shadow sm:rounded-lg">
                 <div class="max-w">
                     <section>
@@ -251,8 +255,11 @@
                             </summary>
                             <form class="mt-6 space-y-2" @submit.prevent="">
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="mail_transport"
-                                                   :value="__('configuration.Mail transport')"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="mail_transport"
+                                                       :value="__('configuration.Mail transport')"/>
+                                        <x-tooltip>{!! __('configuration.Tooltip Mail transport') !!}</x-tooltip>
+                                    </div>
                                     <x-text-input id="mail_transport" name="mail_transport" type="text"
                                                   class="mt-1 block w-full"
                                                   :value="old('mail_transport')" autofocus
@@ -262,9 +269,12 @@
                                 </div>
 
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="mail_host"
-                                                   :value="__('configuration.Mail host')"/>
-                                    <x-text-input id="mail_host" name="mail_host" type="text"
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="mail_host"
+                                                       :value="__('configuration.Mail host')"/>
+                                        <x-tooltip>{!! __('configuration.Tooltip Mail host') !!}</x-tooltip>
+                                    </div>
+                                   <x-text-input id="mail_host" name="mail_host" type="text"
                                                   class="mt-1 block w-full"
                                                   :value="old('mail_host')" autofocus
                                                   placeholder="mail.example.com"
@@ -273,8 +283,11 @@
                                 </div>
 
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="mail_port"
-                                                   :value="__('configuration.Mail port')"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="mail_port"
+                                                       :value="__('configuration.Mail port')"/>
+                                        <x-tooltip>{!! __('configuration.Tooltip Mail port') !!}</x-tooltip>
+                                    </div>
                                     <x-text-input id="mail_port" name="mail_port" type="text"
                                                   class="mt-1 block w-full"
                                                   :value="old('mail_port')" autofocus
@@ -284,9 +297,12 @@
                                 </div>
 
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="mail_encryption"
-                                                   :value="__('configuration.Mail encryption')"/>
-                                    <x-text-input id="mail_encryption" name="mail_encryption" type="text"
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="mail_encryption"
+                                                       :value="__('configuration.Mail encryption')"/>
+                                        <x-tooltip>{!! __('configuration.Tooltip Mail encryption') !!}</x-tooltip>
+                                    </div>
+                                   <x-text-input id="mail_encryption" name="mail_encryption" type="text"
                                                   class="mt-1 block w-full"
                                                   :value="old('mail_encryption')" autofocus
                                                   placeholder="tls"
@@ -295,8 +311,11 @@
                                 </div>
 
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="mail_username"
-                                                   :value="__('configuration.Mail username')"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="mail_username"
+                                                       :value="__('configuration.Mail username')"/>
+                                        <x-tooltip>{{ __('configuration.Tooltip Mail username') }}</x-tooltip>
+                                    </div>
                                     <x-text-input id="mail_username" name="mail_username" type="text"
                                                   class="mt-1 block w-full"
                                                   :value="old('mail_username')" autofocus
@@ -306,8 +325,11 @@
                                 </div>
 
                                 <div class="flex flex-row items-center">
-                                    <x-input-label class="w-1/4" for="mail_password"
-                                                   :value="__('configuration.Mail password')"/>
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="mail_password"
+                                                       :value="__('configuration.Mail password')"/>
+                                        <x-tooltip>{{ __('configuration.Tooltip Mail password') }}</x-tooltip>
+                                    </div>
                                     <x-text-input id="mail_password" name="mail_password" type="password"
                                                   class="mt-1 block w-full"
                                                   :value="old('mail_password')" autofocus
@@ -315,6 +337,19 @@
                                                   x-model="options.mail_password"/>
                                 </div>
 
+                                <div class="flex flex-row items-center">
+                                    <div class="w-1/4 flex flex-row items-center">
+                                        <x-input-label for="bcc_copy"
+                                                       :value="__('configuration.Bcc copy')"/>
+                                        <x-tooltip>{!! __('configuration.Tooltip Bcc copy') !!}</x-tooltip>
+                                    </div>
+                                    <x-text-input id="bcc_copy" name="bcc_copy" type="checkbox"
+                                                  class="mt-1 block"
+                                                  :value="old('bcc_copy')" required autofocus
+                                                  autocomplete="bcc_copy"
+                                                  x-model="options.bcc_copy"/>
+                                </div>
+
                             </form>
                         </details>
                     </section>