diff --git a/public/static/style.css b/public/static/style.css
index 4424a71..6874ca5 100644
--- a/public/static/style.css
+++ b/public/static/style.css
@@ -158,13 +158,27 @@ table.bordered_table th {
 
 /* --- Boxes --- */
 .filter_options,
-.edit_box,
+.form_box,
 .confirmation_box {
     border: 1px solid #999999;
     padding: 1rem;
     margin: 1rem 0;
 }
 
+/* --- Detail boxes --- */
+details {
+    margin: 1rem 0;
+}
+
+details > summary {
+    cursor: pointer;
+}
+
+details > p {
+    margin: 0.75rem 1rem;
+    font-family: monospace;
+}
+
 /* --- Detail columns --- */
 input#show_details_checkbox {
     margin-bottom: 1rem;
@@ -174,8 +188,8 @@ input#show_details_checkbox:not(:checked) ~ table .detail_column {
     display: none;
 }
 
-/* --- Edit box --- */
-.edit_box p:last-child {
+/* --- Form box --- */
+.form_box p:last-child {
     margin-bottom: 0;
 }
 
diff --git a/src/Common/FormData.php b/src/Common/FormData.php
new file mode 100644
index 0000000..24eaf68
--- /dev/null
+++ b/src/Common/FormData.php
@@ -0,0 +1,86 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Common;
+
+use MailAccountAdmin\Exceptions\InputValidationError;
+
+abstract class FormData
+{
+    // Abstract methods
+
+    abstract public static function createFromArray($raw): self;
+
+
+    // Input validation - Base types
+
+    protected static function validateString(string $raw, int $minLength = 0, int $maxLength = 5000, string $fieldName = 'Field'): string
+    {
+        if ($raw === '' && $minLength > 0) {
+            throw new InputValidationError("$fieldName is required.");
+        } elseif (strlen($raw) < $minLength) {
+            throw new InputValidationError("$fieldName is too short (minimum $minLength characters).");
+        } elseif (strlen($raw) > 100) {
+            throw new InputValidationError("$fieldName is too long (maximum $maxLength characters).");
+        }
+        return $raw;
+    }
+
+    protected static function validateBoolOption(string $raw): bool
+    {
+        return $raw !== '';
+    }
+
+
+    // Input validation - Application specific validators
+
+    protected static function validateUsername(string $username, bool $required = true): ?string
+    {
+        if (!$required && $username === '') {
+            return null;
+        }
+
+        $username = strtolower(
+            self::validateString($username, 3, 100, 'Username')
+        );
+
+        if (!preg_match('/^[a-z0-9._+-]+@[a-z0-9.-]+$/', $username) || preg_match('/^\\.|\\.\\.|\\.@|@\\.|\\.$/', $username)) {
+            throw new InputValidationError('Username is not valid (must be a valid mail address).');
+        }
+        return $username;
+    }
+
+    protected static function validatePassword(string $password, string $passwordRepeat, bool $required = true): ?string
+    {
+        if (!$required && $password === '' && $passwordRepeat === '') {
+            return null;
+        }
+
+        $password = self::validateString($password, 6, 1000, 'Password');
+
+        if ($password !== $passwordRepeat) {
+            throw new InputValidationError('Passwords do not match.');
+        }
+        return $password;
+    }
+
+    protected static function validateHomeDir(string $homeDir, bool $required = true): ?string
+    {
+        if (!$required && $homeDir === '') {
+            return null;
+        }
+
+        $homeDir = self::validateString($homeDir, 0, 100, 'Home directory');
+        $homeDir = trim($homeDir, '/');
+
+        if (!preg_match('!^[a-z0-9._+-]+(/[a-z0-9._+-]+)*$!i', $homeDir)) {
+            throw new InputValidationError('Home directory is not a valid path.');
+        }
+        return $homeDir;
+    }
+
+    protected static function validateMemo(string $memo): string
+    {
+        return self::validateString($memo, 0, 5000, 'Admin memo');
+    }
+}
diff --git a/src/Dependencies.php b/src/Dependencies.php
index 8d49ed9..654bbed 100644
--- a/src/Dependencies.php
+++ b/src/Dependencies.php
@@ -145,14 +145,13 @@ class Dependencies
                 $c->get(SessionHelper::class),
                 $c->get(UserHelper::class),
                 $c->get(AccountHandler::class),
-                $c->get(AccountRepository::class),
-                $c->get(AliasRepository::class),
             );
         });
         $container->set(AccountHandler::class, function (ContainerInterface $c) {
             return new AccountHandler(
                 $c->get(AccountRepository::class),
                 $c->get(AliasRepository::class),
+                $c->get(DomainRepository::class),
                 $c->get(PasswordHelper::class),
             );
         });
diff --git a/src/Frontend/Accounts/AccountController.php b/src/Frontend/Accounts/AccountController.php
index 79a8bf4..3b46c6e 100644
--- a/src/Frontend/Accounts/AccountController.php
+++ b/src/Frontend/Accounts/AccountController.php
@@ -52,8 +52,39 @@ class AccountController extends BaseController
 
     public function showAccountCreate(Request $request, Response $response): Response
     {
-        // TODO: just a placeholder
-        return $this->showAccounts($request, $response);
+        $renderData = $this->accountHandler->getPageDataForCreate();
+
+        // If the form has been submitted, add the result message and form input data to the render data array
+        $lastActionResult = $this->sessionHelper->getLastActionResult();
+        if ($lastActionResult !== null) {
+            $renderData = array_merge($renderData, $lastActionResult->getRenderData());
+        }
+
+        return $this->view->render($response, 'account_create.html.twig', $renderData);
+    }
+
+    public function createAccount(Request $request, Response $response): Response
+    {
+        // Parse form data
+        $createData = $request->getParsedBody();
+
+        try {
+            // Validate input
+            $validatedCreateData = AccountCreateData::createFromArray($createData);
+            $newAccountId = $this->accountHandler->createNewAccount($validatedCreateData);
+
+            // Save success result
+            $newAccountName = $validatedCreateData->getUsername();
+            $this->sessionHelper->setLastActionResult(ActionResult::createSuccessResult(
+                'Account <a href="/accounts/' . $newAccountId . '">' . $newAccountName . '</a> was created.'
+            ));
+        } catch (InputValidationError $e) {
+            // Save error result
+            $this->sessionHelper->setLastActionResult(ActionResult::createErrorResult($e->getMessage(), $createData));
+        }
+
+        // Redirect to edit form page via GET (PRG)
+        return $response->withHeader('Location', '/accounts/new')->withStatus(303);
     }
 
 
@@ -78,25 +109,20 @@ class AccountController extends BaseController
 
     public function editAccount(Request $request, Response $response, array $args): Response
     {
-        // Parse URL arguments
+        // Parse URL arguments and form data
         $accountId = (int)$args['id'];
-
-        // Parse form data
         $editData = $request->getParsedBody();
-        $errorMessage = null;
 
         try {
             // Validate input
             $validatedEditData = AccountEditData::createFromArray($editData);
             $this->accountHandler->editAccountData($accountId, $validatedEditData);
-        } catch (InputValidationError $e) {
-            $errorMessage = $e->getMessage();
-        }
 
-        if (empty($errorMessage)) {
+            // Save success result
             $this->sessionHelper->setLastActionResult(ActionResult::createSuccessResult('Account data was saved.'));
-        } else {
-            $this->sessionHelper->setLastActionResult(ActionResult::createErrorResult($errorMessage, $editData));
+        } catch (InputValidationError $e) {
+            // Save error result
+            $this->sessionHelper->setLastActionResult(ActionResult::createErrorResult($e->getMessage(), $editData));
         }
 
         // Redirect to edit form page via GET (PRG)
diff --git a/src/Frontend/Accounts/AccountCreateData.php b/src/Frontend/Accounts/AccountCreateData.php
new file mode 100644
index 0000000..5da7bcd
--- /dev/null
+++ b/src/Frontend/Accounts/AccountCreateData.php
@@ -0,0 +1,60 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Frontend\Accounts;
+
+use MailAccountAdmin\Common\FormData;
+
+class AccountCreateData extends FormData
+{
+    private string $username;
+    private string $password;
+    private bool $active;
+    private ?string $homeDir;
+    private string $memo;
+
+    private function __construct(string $username, string $password, bool $active, ?string $homeDir, string $memo)
+    {
+        $this->username = $username;
+        $this->password = $password;
+        $this->active = $active;
+        $this->homeDir = $homeDir;
+        $this->memo = $memo;
+    }
+
+    public static function createFromArray($raw): self
+    {
+        return new self(
+            self::validateUsername(trim($raw['username'] ?? '')),
+            self::validatePassword(trim($raw['password'] ?? ''), trim($raw['password_repeat'] ?? '')),
+            self::validateBoolOption(trim($raw['is_active'] ?? '')),
+            self::validateHomeDir(trim($raw['home_dir'] ?? ''), false),
+            self::validateMemo(trim($raw['memo'] ?? '')),
+        );
+    }
+
+    public function getUsername(): string
+    {
+        return $this->username;
+    }
+
+    public function getPassword(): string
+    {
+        return $this->password;
+    }
+
+    public function getActive(): bool
+    {
+        return $this->active;
+    }
+
+    public function getHomeDir(): ?string
+    {
+        return $this->homeDir;
+    }
+
+    public function getMemo(): string
+    {
+        return $this->memo;
+    }
+}
diff --git a/src/Frontend/Accounts/AccountEditData.php b/src/Frontend/Accounts/AccountEditData.php
index f32553e..9f5f67d 100644
--- a/src/Frontend/Accounts/AccountEditData.php
+++ b/src/Frontend/Accounts/AccountEditData.php
@@ -3,9 +3,9 @@ declare(strict_types=1);
 
 namespace MailAccountAdmin\Frontend\Accounts;
 
-use MailAccountAdmin\Exceptions\InputValidationError;
+use MailAccountAdmin\Common\FormData;
 
-class AccountEditData
+class AccountEditData extends FormData
 {
     private ?string $username;
     private bool $usernameCreateAlias;
@@ -13,10 +13,10 @@ class AccountEditData
     private ?string $password;
     private bool $active;
     private ?string $homeDir;
-    private ?string $memo;
+    private string $memo;
 
     private function __construct(?string $username, bool $usernameCreateAlias, bool $usernameReplaceAlias, ?string $password, bool $active,
-                                 ?string $homeDir, ?string $memo)
+                                 ?string $homeDir, string $memo)
     {
         $this->username = $username;
         $this->usernameCreateAlias = $usernameCreateAlias;
@@ -30,70 +30,16 @@ class AccountEditData
     public static function createFromArray($raw): self
     {
         return new self(
-            self::validateUsername(trim($raw['username'] ?? '')),
+            self::validateUsername(trim($raw['username'] ?? ''), false),
             self::validateBoolOption(trim($raw['username_create_alias'] ?? '')),
             self::validateBoolOption(trim($raw['username_replace_alias'] ?? '')),
-            self::validatePassword(trim($raw['password'] ?? ''), trim($raw['password_repeat'] ?? '')),
+            self::validatePassword(trim($raw['password'] ?? ''), trim($raw['password_repeat'] ?? ''), false),
             self::validateBoolOption(trim($raw['is_active'] ?? '')),
-            self::validateHomeDir(trim($raw['home_dir'] ?? '')),
-            trim($raw['memo'] ?? '')
+            self::validateHomeDir(trim($raw['home_dir'] ?? ''), false),
+            self::validateMemo(trim($raw['memo'] ?? '')),
         );
     }
 
-
-    // Input validation
-
-    private static function validateUsername(string $username): ?string
-    {
-        if ($username === '') {
-            return null;
-        }
-        if (strlen($username) > 100) {
-            throw new InputValidationError('Username is too long.');
-        }
-
-        $username = strtolower($username);
-        if (!preg_match('/^[a-z0-9._+-]+@[a-z0-9.-]+$/', $username) || preg_match('/^\\.|\\.\\.|\\.@|@\\.|\\.$/', $username)) {
-            throw new InputValidationError('Username is not valid (must be a valid mail address).');
-        }
-        return $username;
-    }
-
-    private static function validatePassword(string $password, string $passwordRepeat): ?string
-    {
-        if ($password === '') {
-            return null;
-        }
-        if ($password !== $passwordRepeat) {
-            throw new InputValidationError('Passwords do not match.');
-        }
-        return $password;
-    }
-
-    private static function validateHomeDir(string $homeDir): ?string
-    {
-        if ($homeDir === '') {
-            return null;
-        }
-        if (strlen($homeDir) > 100) {
-            throw new InputValidationError('Home directory is too long.');
-        }
-
-        $homeDir = trim($homeDir, '/');
-        if (!preg_match('!^[a-z0-9._+-]+(/[a-z0-9._+-]+)*$!i', $homeDir)) {
-            throw new InputValidationError('Home directory is not a valid path.');
-        }
-        return $homeDir;
-    }
-
-    private static function validateBoolOption(string $raw): bool
-    {
-        return $raw !== '';
-    }
-
-
-    // Getters
-
     public function getUsername(): ?string
     {
         return $this->username;
diff --git a/src/Frontend/Accounts/AccountHandler.php b/src/Frontend/Accounts/AccountHandler.php
index c9c72d1..4d798e0 100644
--- a/src/Frontend/Accounts/AccountHandler.php
+++ b/src/Frontend/Accounts/AccountHandler.php
@@ -8,17 +8,21 @@ use MailAccountAdmin\Exceptions\AccountNotFoundException;
 use MailAccountAdmin\Exceptions\InputValidationError;
 use MailAccountAdmin\Repositories\AccountRepository;
 use MailAccountAdmin\Repositories\AliasRepository;
+use MailAccountAdmin\Repositories\DomainRepository;
 
 class AccountHandler
 {
     private AccountRepository $accountRepository;
     private AliasRepository $aliasRepository;
+    private DomainRepository $domainRepository;
     private PasswordHelper $passwordHelper;
 
-    public function __construct(AccountRepository $accountRepository, AliasRepository $aliasRepository, PasswordHelper $passwordHelper)
+    public function __construct(AccountRepository $accountRepository, AliasRepository $aliasRepository, DomainRepository $domainRepository,
+                                PasswordHelper $passwordHelper)
     {
         $this->accountRepository = $accountRepository;
         $this->aliasRepository = $aliasRepository;
+        $this->domainRepository = $domainRepository;
         $this->passwordHelper = $passwordHelper;
     }
 
@@ -59,6 +63,45 @@ class AccountHandler
     }
 
 
+    // -- /accounts/new - Create new account
+
+    public function getPageDataForCreate(): array
+    {
+        return [
+            'domainList' => array_keys($this->domainRepository->fetchDomainList()),
+        ];
+    }
+
+    public function createNewAccount(AccountCreateData $createData): int
+    {
+        // Check if new username is still available
+        $username = $createData->getUsername();
+        if (!$this->accountRepository->checkUsernameAvailable($username) || !$this->aliasRepository->checkAliasAvailable($username)) {
+            throw new InputValidationError("Username \"$username\" is not available.");
+        }
+
+        // Hash new password
+        $passwordHash = $this->passwordHelper->hashPassword($createData->getPassword());
+
+        // Construct home directory from username if necessary
+        if ($createData->getHomeDir() !== null) {
+            $homeDir = $createData->getHomeDir();
+        } else {
+            [$localPart, $domainPart] = explode('@', $username, 2);
+            $homeDir = $domainPart . '/' . $localPart;
+        }
+
+        // Create account in database
+        return $this->accountRepository->insertAccount(
+            $username,
+            $passwordHash,
+            $createData->getActive(),
+            $homeDir,
+            $createData->getMemo()
+        );
+    }
+
+
     // -- /accounts/{id}/edit - Edit account data
 
     public function getAccountDataForEdit(int $accountId): array
diff --git a/src/Repositories/AccountRepository.php b/src/Repositories/AccountRepository.php
index 7dba5a0..318ada1 100644
--- a/src/Repositories/AccountRepository.php
+++ b/src/Repositories/AccountRepository.php
@@ -65,6 +65,27 @@ class AccountRepository extends BaseRepository
         return $statement->rowCount() === 0;
     }
 
+    public function insertAccount(string $username, string $passwordHash, bool $active, string $homeDir, string $memo): int
+    {
+        $query = '
+            INSERT INTO mail_users
+            (username, password, is_active, home_dir, memo)
+            VALUES
+            (:username, :password, :is_active, :home_dir, :memo)
+        ';
+
+        $statement = $this->pdo->prepare($query);
+        $statement->execute([
+            'username' => $username,
+            'password' => $passwordHash,
+            'is_active' => $active ? '1' : '0',
+            'home_dir' => $homeDir,
+            'memo' => $memo,
+        ]);
+
+        return (int)$this->pdo->lastInsertId();
+    }
+
     public function updateAccountWithId(int $accountId, ?string $newUsername, ?string $newPasswordHash, bool $newActive,
                                         ?string $newHomeDir, string $newMemo): void
     {
diff --git a/src/Routes.php b/src/Routes.php
index 728e70e..62faebd 100644
--- a/src/Routes.php
+++ b/src/Routes.php
@@ -27,6 +27,7 @@ class Routes
         // Accounts
         $app->get('/accounts', AccountController::class . ':showAccounts');
         $app->get('/accounts/new', AccountController::class . ':showAccountCreate');
+        $app->post('/accounts/new', AccountController::class . ':createAccount');
         $app->get('/accounts/{id:[1-9][0-9]*}', AccountController::class . ':showAccountDetails');
         $app->get('/accounts/{id:[1-9][0-9]*}/edit', AccountController::class . ':showAccountEdit');
         $app->post('/accounts/{id:[1-9][0-9]*}/edit', AccountController::class . ':editAccount');
diff --git a/templates/account_create.html.twig b/templates/account_create.html.twig
new file mode 100644
index 0000000..d881f7b
--- /dev/null
+++ b/templates/account_create.html.twig
@@ -0,0 +1,98 @@
+{% extends "base.html.twig" %}
+
+{% block title %}Create account{% endblock %}
+
+{% block content %}
+    <h2>Accounts</h2>
+
+    <p>
+        <b>Actions:</b>
+        <a href="/accounts">List accounts</a> |
+        <span>Create account</span>
+    </p>
+
+    <h3>Create new account</h3>
+
+    <form action="/accounts/new" method="POST">
+        {{ include('includes/form_result_box.html.twig') }}
+
+        <div class="form_box">
+            <h4>Username</h4>
+            <p>
+                This is the primary mail address of the account and the username to use for login.
+                The domain is part of the username (e.g. "user@example.com").
+            </p>
+            <details>
+                <summary>Show list of known domains</summary>
+                <p>{{ domainList ? domainList | join(', ') : 'No domains exist yet.' }}</p>
+            </details>
+            <table>
+                <tr>
+                    <td><label for="create_username">Username:</label></td>
+                    <td><input id="create_username" name="username" value="{{ formData['username'] | default('') }}"/></td>
+                </tr>
+            </table>
+        </div>
+
+        <div class="form_box">
+            <h4>Password</h4>
+            <p>The password will be hashed using the current default hash algorithm.</p>
+            <table>
+                <tr>
+                    <td><label for="create_password">New password:</label></td>
+                    <td><input type="password" id="create_password" name="password" value="{{ formData['password'] | default('') }}"/></td>
+                </tr>
+                <tr>
+                    <td><label for="create_password_repeat">Repeat password:</label></td>
+                    <td><input type="password" id="create_password_repeat" name="password_repeat" value="{{ formData['password_repeat'] | default('') }}"/></td>
+                </tr>
+            </table>
+        </div>
+
+        <div class="form_box">
+            <h4>Account status</h4>
+            <table>
+                <tr>
+                    <td>New account status:</td>
+                    <td>
+                        <label>
+                            <input type="checkbox" name="is_active" {{ formData is not defined or formData['is_active'] | default() ? 'checked' : '' }}/>
+                            Active
+                        </label>
+                    </td>
+                </tr>
+            </table>
+        </div>
+
+        <div class="form_box">
+            <h4>Home directory</h4>
+            <p><b>Note:</b> By default the home directory will be determined automatically from the username and domain. Only change this if you know what you're doing!</p>
+            <table>
+                <tr>
+                    <td>Default home directory:</td>
+                    <td><span class="gray">/srv/vmail/</span><samp>&lt;domain.tld&gt;</samp>/<samp>&lt;local_part&gt;</samp></td>
+                </tr>
+                <tr>
+                    <td><label for="create_home_dir">Set custom home directory:</label></td>
+                    <td>
+                        <span class="gray">/srv/vmail/</span><input id="create_home_dir" name="home_dir" value="{{ formData['home_dir'] | default('') }}"/>
+                    </td>
+                </tr>
+            </table>
+        </div>
+
+        <div class="form_box">
+            <h4><label for="create_memo">Admin memo</label></h4>
+            <p>This field is only readable by admins.</p>
+            <table>
+                <tr>
+                    <td><label for="create_memo">Admin memo:</label></td>
+                    <td><textarea id="create_memo" name="memo" style="min-width: 40em;">{{ formData['memo'] | default('') }}</textarea></td>
+                </tr>
+            </table>
+        </div>
+
+        <button type="submit">Create account</button>
+        <button type="reset">Reset form</button>
+    </form>
+{% endblock %}
diff --git a/templates/account_edit.html.twig b/templates/account_edit.html.twig
index f4985ab..6b9c71a 100644
--- a/templates/account_edit.html.twig
+++ b/templates/account_edit.html.twig
@@ -16,21 +16,11 @@
     <h3>Edit account data</h3>
 
     <form action="/accounts/{{ id }}/edit" method="POST">
-        {% if success is defined %}
-            <div class="success_box">
-                <h4>Success</h4>
-                {{ success }}
-            </div>
-        {% elseif error is defined %}
-        <div class="error_box">
-            <h4>Error</h4>
-            {{ error }}
-        </div>
-        {% endif %}
+        {{ include('includes/form_result_box.html.twig') }}
 
         <input type="hidden" name="user_id" value="{{ id }}"/>
 
-        <div class="edit_box">
+        <div class="form_box">
             <h4>Username</h4>
             <table>
                 <tr>
@@ -60,7 +50,7 @@
             </table>
         </div>
 
-        <div class="edit_box">
+        <div class="form_box">
             <h4>Password</h4>
             <p>The new password will be hashed using the current default hash algorithm.</p>
             <table>
@@ -75,7 +65,7 @@
             </table>
         </div>
 
-        <div class="edit_box">
+        <div class="form_box">
             <h4>Account status</h4>
             <table>
                 <tr>
@@ -99,7 +89,7 @@
             </table>
         </div>
 
-        <div class="edit_box">
+        <div class="form_box">
             <h4>Home directory</h4>
             <p><b>Important:</b> Changing the home directory here will <b>NOT</b> move any existing mail data, this needs to be done
                 manually!</p>
@@ -117,7 +107,7 @@
             </table>
         </div>
 
-        <div class="edit_box">
+        <div class="form_box">
             <h4><label for="edit_memo">Admin memo</label></h4>
             <p>This field is only readable by admins.</p>
             <table>
diff --git a/templates/accounts.html.twig b/templates/accounts.html.twig
index caa2883..ae99225 100644
--- a/templates/accounts.html.twig
+++ b/templates/accounts.html.twig
@@ -7,6 +7,7 @@
 
     <p>
         <b>Actions:</b>
+        <span>List accounts</span> |
         <a href="/accounts/new">Create account</a>
     </p>
 
diff --git a/templates/includes/form_result_box.html.twig b/templates/includes/form_result_box.html.twig
new file mode 100644
index 0000000..0f010f5
--- /dev/null
+++ b/templates/includes/form_result_box.html.twig
@@ -0,0 +1,11 @@
+{% if success is defined %}
+    <div class="success_box">
+        <h4>Success</h4>
+        {{ success | raw }}
+    </div>
+{% elseif error is defined %}
+    <div class="error_box">
+        <h4>Error</h4>
+        {{ error | raw }}
+    </div>
+{% endif %}