diff --git a/app/Models/Contact.php b/app/Models/Contact.php
index 04e2a99..576efa8 100644
--- a/app/Models/Contact.php
+++ b/app/Models/Contact.php
@@ -11,14 +11,18 @@ class Contact extends Model
 
     protected $fillable = [
         'customer_id',
+        'is_primary',
         'salutation',
+        'academic_title',
         'first_name',
         'last_name',
+        'job_title',
         'email',
         'phone',
-        'position',
-        'is_primary',
+        'mobile_phone',
         'avatar',
+        'online_accounts',
+        'notes',
     ];
 
     public function customer()
@@ -38,7 +42,7 @@ public function getAvatarUrlAttribute()
         // Return null if no avatar is set
         return null;
     }
-    
+
     /**
      * Scope a query to order contacts with primary contacts first.
      */
@@ -46,4 +50,33 @@ public function scopePrimaryFirst($query)
     {
         return $query->orderBy('is_primary', 'desc');
     }
+
+    /**
+     * Set the online accounts attribute.
+     *
+     * @param  array  $value
+     * @return void
+     */
+    public function setOnlineAccountsAttribute($value)
+    {
+        if (is_string($value)) {
+            $value = json_decode($value, true);
+        }
+
+        $this->attributes['online_accounts'] = json_encode([
+            'platform' => $value['platform'] ?? '',
+            'user_name' => $value['user_name'] ?? '',
+            'url' => $value['url'] ?? ''
+        ]);
+    }
+
+    /**
+     * Get the online accounts attribute.
+     *
+     * @return array
+     */
+    public function getOnlineAccountsAttribute()
+    {
+        return json_decode($this->attributes['online_accounts'], true) ?? null;
+    }
 }
diff --git a/database/factories/ContactFactory.php b/database/factories/ContactFactory.php
index 631c424..4f3455f 100644
--- a/database/factories/ContactFactory.php
+++ b/database/factories/ContactFactory.php
@@ -21,16 +21,40 @@ public function definition()
         }
 
         $gender = rand(0, 9) >= 5 ? 'female' : 'male';
-        
-        return [
+        $userName = $this->faker->userName();
+        $hasLinkedIn = rand(0, 9) >= 7;
+        $hasMatrix = rand(0, 9) >= 7;
+        $hasGithub = rand(0, 9) >= 7;
+
+        $contact = [
+            'is_primary' => $this->faker->boolean(30),
             'salutation' => $this->faker->title($gender),
             'first_name' => $this->faker->firstName($gender),
             'last_name' => $this->faker->lastName($gender),
+            'job_title' => $this->faker->jobTitle(),
             'email' => $this->faker->unique()->safeEmail(),
             'phone' => $this->faker->phoneNumber(),
-            'position' => $this->faker->jobTitle(),
-            'is_primary' => $this->faker->boolean(30),
+            'mobile_phone' => $this->faker->phoneNumber(),
             'avatar' => $avatar,
+            'online_accounts' => []
         ];
+
+        if ($hasLinkedIn) $contact[] =  [
+            'platform' => 'linkedin',
+            'user_name' => $userName,
+            'url' => 'https://www.linkedin.com/in/' . $userName
+        ];
+        if ($hasMatrix) $contact[] =  [
+            'platform' => 'matrix',
+            'user_name' => $userName,
+            'url' => '@' . $userName .  ':matrix.org'
+        ];
+        if ($hasGithub) $contact[] =  [
+            'platform' => 'github',
+            'user_name' => $userName,
+            'url' => 'https://www.github.com/' . $userName
+        ];
+
+        return $contact;
     }
 }
diff --git a/database/migrations/2025_10_06_122048_create_contacts_table.php b/database/migrations/2025_10_06_122048_create_contacts_table.php
index bd5f75e..ef621e7 100644
--- a/database/migrations/2025_10_06_122048_create_contacts_table.php
+++ b/database/migrations/2025_10_06_122048_create_contacts_table.php
@@ -11,14 +11,18 @@ public function up()
         Schema::create('contacts', function (Blueprint $table) {
             $table->id();
             $table->foreignId('customer_id')->constrained()->onDelete('cascade');
+            $table->boolean('is_primary')->default(false);
             $table->string('salutation', 20);
+            $table->string('academic_title', 20)->nullable();
             $table->string('first_name', 50);
             $table->string('last_name', 50);
+            $table->string('job_title', 100)->nullable();
             $table->string('email', 100)->nullable();
             $table->string('phone', 20)->nullable();
-            $table->string('position', 100)->nullable();
-            $table->boolean('is_primary')->default(false);
+            $table->string('mobile_phone', 20)->nullable();
             $table->string('avatar')->nullable();
+            $table->json('online_accounts')->nullable();
+            $table->text('notes')->nullable();
             $table->timestamps();
         });
     }
diff --git a/resources/js/pages/Customers.vue b/resources/js/pages/Customers.vue
index b8744bd..7df507e 100644
--- a/resources/js/pages/Customers.vue
+++ b/resources/js/pages/Customers.vue
@@ -13,7 +13,7 @@ import { Input } from '@/components/ui/input'
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'
 import { ButtonGroup, ButtonGroupSeparator, ButtonGroupText, } from '@/components/ui/button-group'
-import { Copy, Delete, Edit, Globe, House, LayoutGrid, LayoutList, Phone, Plus, Rows3, Rows4, Search } from "lucide-vue-next"
+import { Copy, Delete, Edit, Globe, House, LayoutGrid, LayoutList, Mail, Phone, Plus, Rows3, Rows4, Search, Smartphone } from "lucide-vue-next"
 import Fuse from 'fuse.js';
 import { getInitials } from '@/composables/useInitials';
 import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle, } from '@/components/ui/card'
@@ -91,9 +91,30 @@ const showDetail = (customer: Customer) => {
     detailDialogOpen.value = true
 }
 
+const mail = (email: string, event: Event) => {
+    event.stopPropagation();
+    window.open('mailto:' + email, '_self')
+}
+
 const browse = (url: string, event: Event) => {
     event.stopPropagation();
-    window.open(url, '_blank')
+
+    if (!/^https?:\/\//i.test(url)) {
+        url = 'https://' + url;
+    }
+
+    try {
+        const parsedUrl = new URL(url);
+        if (!parsedUrl.hostname || parsedUrl.hostname === 'sers') {
+            throw new Error('Ungültiger Hostname');
+        }
+
+        window.open(url, '_blank');
+    } catch (e) {
+        toast.error('Ungültige URL', {
+            description: 'Die eingegebene URL ist nicht gültig.'
+        });
+    }
 }
 
 const call = (number: string, event: Event) => {
@@ -213,16 +234,39 @@ const call = (number: string, event: Event) => {
                             <Tooltip v-for="contact in customer.contacts">
                                 <TooltipTrigger>
                                     <Avatar class="-mr-2 size-14 shadow">
-                                        <AvatarImage v-if="contact.avatar"
-                                            :src="'/storage/uploads/' + contact.avatar" loading="lazy" />
+                                        <AvatarImage v-if="contact.avatar" :src="'/storage/uploads/' + contact.avatar"
+                                            loading="lazy" />
                                         <AvatarFallback
                                             :class="bgColorForString(getInitials(contact.firstName + ' ' + contact.lastName))">
                                             {{ getInitials(contact.firstName + ' ' + contact.lastName) }}
                                         </AvatarFallback>
                                     </Avatar>
                                 </TooltipTrigger>
-                                <TooltipContent>
-                                    <p>{{ contact.firstName + ' ' + contact.lastName }}</p>
+                                <TooltipContent class="p-4">
+                                    <p class="font-bold">
+                                        <span v-if="contact.academicTitle">{{ contact.academicTitle }}</span>
+                                        <span>{{ contact.firstName + ' ' + contact.lastName }}</span>
+                                    </p>
+                                    <p v-if="contact.jobTitle" class="text-muted-foreground">{{ contact.jobTitle }}</p>
+
+                                    <ButtonGroup class="mt-4">
+                                        <Button size="sm" v-if="contact.email"
+                                            @click="(event: Event) => mail(contact.email as string, event)">
+                                            <Mail stroke-width="1.5" @click="" />
+                                        </Button>
+                                        <Button size="sm" v-if="contact.phone"
+                                            @click="(event: Event) => call(contact.phone as string, event)">
+                                            <Phone stroke-width="1.5" @click="" />
+                                        </Button>
+                                        <Button size="sm" v-if="contact.mobilePhone"
+                                            @click="(event: Event) => call(contact.mobilePhone as string, event)">
+                                            <Smartphone stroke-width="1.5" @click="" />
+                                        </Button>
+                                        <Button size="sm" v-for="account in contact.onlineAccounts"
+                                            @click="(event: Event) => browse(account.url as string, event)">
+                                            <span>{{ account.platform }}</span>
+                                        </Button>
+                                    </ButtonGroup>
                                 </TooltipContent>
                             </Tooltip>
 
diff --git a/resources/js/types/index.d.ts b/resources/js/types/index.d.ts
index 2de035a..3c4c435 100644
--- a/resources/js/types/index.d.ts
+++ b/resources/js/types/index.d.ts
@@ -70,16 +70,26 @@ export function newAddress(): Address {
     }
 }
 
+export interface OnlineAccount {
+    platform: string;
+    userName: string;
+    url: string;
+}
+
 export interface Contact {
     id: number;
+    isPrimary?: boolean;
     salutation: string;
+    academicTitle?: string;
     firstName: string;
     lastName: string;
+    jobTitle?: string;
     email?: string;
     phone?: string;
-    position?: string;
-    isPrimary?: boolean;
+    mobilePhone?: string;
     avatar?: string;
+    notes?: string;
+    onlineAccounts?: OnlineAccount[];
 }
 
 export type ContactType = Contact
@@ -87,14 +97,18 @@ export type ContactType = Contact
 export function newContact(): Contact {
     return {
         id: 0,
+        isPrimary: false,
         salutation: '',
+        academicTitle: null,
         firstName: '',
         lastName: '',
+        jobTitle: '',
         email: '',
         phone: '',
-        position: '',
-        isPrimary: false,
-        avatar: ''
+        mobilePhone: '',
+        avatar: '',
+        notes: '',
+        onlineAccounts: []
     }
 }