diff --git a/simpleEmail_Projekt/domain/database.php b/simpleEmail_Projekt/domain/database.php
new file mode 100644
index 0000000..746d139
--- /dev/null
+++ b/simpleEmail_Projekt/domain/database.php
@@ -0,0 +1,8 @@
+<?php
+try {
+    $dbh = new PDO('mysql:host=localhost;dbname=simpleymail', 'root', '');
+    $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+} catch (PDOException $e) {
+    echo "Verbindung fehlgeschlagen: " . $e->getMessage();
+}
+?>
\ No newline at end of file
diff --git a/simpleEmail_Projekt/domain/genderEnum.php b/simpleEmail_Projekt/domain/genderEnum.php
new file mode 100644
index 0000000..fdd2d15
--- /dev/null
+++ b/simpleEmail_Projekt/domain/genderEnum.php
@@ -0,0 +1,7 @@
+<?php
+enum Gender: string {
+    case Male = 'male';
+    case Female = 'female';
+    case Diverse = 'diverse';
+}
+?>
\ No newline at end of file
diff --git a/simpleEmail_Projekt/domain/user.php b/simpleEmail_Projekt/domain/user.php
new file mode 100644
index 0000000..cd8a71f
--- /dev/null
+++ b/simpleEmail_Projekt/domain/user.php
@@ -0,0 +1,63 @@
+<?php
+    include_once 'userEmail.php';
+    include_once 'genderEnum.php';
+
+    class User{
+            private $firstname;
+            private $lastname;
+            private $birthdate;
+            private $userEmail;
+            private $password;
+
+            public function __construct($firstname, $lastname, $birthdate, Gender $gender, $username, $password) {
+            $this->firstname = $firstname;
+            $this->lastname = $lastname;
+            $this->birthdate = $birthdate;
+            $this->gender = $gender;
+            $this->password = $password;
+            $this->userEmail = new userEmail($username, $password);
+        }
+
+
+        public function getFirstname() {
+            return $this->firstname;
+        }
+
+        public function setFirstname($firstname) {
+            $this->firstname = $firstname;
+        }
+
+        public function getLastname() {
+            return $this->lastname;
+        }
+
+        public function setLastname($lastname) {
+            $this->lastname = $lastname;
+        }
+
+        public function getBirthdate() {
+            return $this->birthdate;
+        }
+
+        public function setBirthdate($birthdate) {
+            $this->birthdate = $birthdate;
+        }
+
+        public function getGender() {
+            return $this->gender;
+        }
+
+        public function setGender(Gender $gender) {
+            $this->gender = $gender;
+        }
+         // __toString Methode
+        public function __toString() {
+        return "Vorname: {$this->firstname}\n" .
+               "Nachname: {$this->lastname}\n" .
+               "Geburtsdatum: {$this->birthdate}\n" .
+               "Geschlecht: {$this->gender->value}\n" .
+               "Benutzername: {$this->userEmail->getUsername()}\n";
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/simpleEmail_Projekt/domain/userEmail.php b/simpleEmail_Projekt/domain/userEmail.php
new file mode 100644
index 0000000..d52a3d7
--- /dev/null
+++ b/simpleEmail_Projekt/domain/userEmail.php
@@ -0,0 +1,25 @@
+<?php
+    class UserEmail{
+        private $username;
+        private $password;
+
+        public function __construct($username,$password){
+            $this->username = $username;
+            $this->password = $password;
+        }
+
+        public function getusername() {
+            return $this->username;
+        }
+
+        public function getPassword() {
+            return $this->password;
+        }
+
+        public function setPassword($password) {
+            $this->password = $password;
+        }
+    }
+
+
+?>
\ No newline at end of file
diff --git a/simpleEmail_Projekt/domain/userManager.php b/simpleEmail_Projekt/domain/userManager.php
new file mode 100644
index 0000000..a468d32
--- /dev/null
+++ b/simpleEmail_Projekt/domain/userManager.php
@@ -0,0 +1,15 @@
+<?php
+include_once 'userEmail.php';
+include_once 'genderEnum.php';
+include_once 'database.php';
+include_once 'user.php'; 
+class UserManager {
+
+    public function userRegister($firstname, $lastname, $birthdate, Gender $gender, $username, $password) {
+        $domain = "@smail.de";
+        $email = $username . $domain;
+        $newUser = new User($firstname, $lastname, $birthdate, $gender, $email, $password);
+        return $newUser;
+    }
+}
+?>
diff --git a/simpleEmail_Projekt/gui/css/registerStyle.css b/simpleEmail_Projekt/gui/css/registerStyle.css
index a338f89..dbf6379 100644
--- a/simpleEmail_Projekt/gui/css/registerStyle.css
+++ b/simpleEmail_Projekt/gui/css/registerStyle.css
@@ -97,4 +97,5 @@ body {
 }
 .form-container span{
     margin: 0px;
+    font-size: 12px;
 }
\ No newline at end of file
diff --git a/simpleEmail_Projekt/gui/html/Register.html b/simpleEmail_Projekt/gui/html/Register.html
index 41da47b..fbd6881 100644
--- a/simpleEmail_Projekt/gui/html/Register.html
+++ b/simpleEmail_Projekt/gui/html/Register.html
@@ -12,7 +12,7 @@
 
 <body>
     <div>
-        <form class="form-container">
+        <form class="form-container" action="../../domain/database.php">
             <h1>Register</h1>
             <label for="firstName">Vorname:<span class="required">*</span>
                 <input type="text" id="firstName" name="firstName" required />
@@ -69,5 +69,5 @@
     </div>
     <script src="../js/handleRegister.js"></script>
 </body>
+</html>
 
-</html>
\ No newline at end of file
diff --git a/simpleEmail_Projekt/gui/js/handleRegister.js b/simpleEmail_Projekt/gui/js/handleRegister.js
index d9b2a5f..95d71f2 100644
--- a/simpleEmail_Projekt/gui/js/handleRegister.js
+++ b/simpleEmail_Projekt/gui/js/handleRegister.js
@@ -9,7 +9,7 @@ var userNameMessage = document.querySelector("#userNameMessage");
 username.addEventListener("input",checkUsername);
 
 passwordInput.addEventListener("input", checkPassword);
-retypePasswordInput.addEventListener("input", checkRetypePassword); // <-- auch beim Re-Type Feld checken!
+retypePasswordInput.addEventListener("input", checkRetypePassword);
 
 function checkPassword() {
     if (passwordInput.value.length < 6 || passwordInput.value.length == 0) {
@@ -35,11 +35,11 @@ function checkRetypePassword() {
 
 
 function checkUsername(){
-
     if (username.value.includes("@")){
         userNameMessage.innerHTML = "Benutzername darf nur Buchstaben und Zahlen enthalten!";
         userNameMessage.style.color="red";
         userNameMessage.style.margin=0;
-    }
+    }else
+        userNameMessage.innerHTML = "";
 
 }
\ No newline at end of file
diff --git a/simpleEmail_Projekt/main/test.php b/simpleEmail_Projekt/main/test.php
new file mode 100644
index 0000000..8fec148
--- /dev/null
+++ b/simpleEmail_Projekt/main/test.php
@@ -0,0 +1,16 @@
+<?php
+include_once '../domain/userManager.php';
+
+$testManager = new UserManager();
+
+$user = $testManager->userRegister(
+    'Ali',
+    'Obaya',
+    '2000-01-01',
+    Gender::Male,
+    'ali.obaya',
+    'meinPasswort123'
+);
+
+echo $user;
+?>
\ No newline at end of file