diff --git a/src b/src
deleted file mode 100644
index e69de29..0000000
diff --git a/src/email-config.php b/src/email-config.php
new file mode 100644
index 0000000..dc4298f
--- /dev/null
+++ b/src/email-config.php
@@ -0,0 +1,6 @@
+<?php
+$mailboxEmail = "mail@example.com";      // Email address messages are sent to (required)
+// $fromEmail = "";                      // Email address messages are sent from (optional, defaults to $mailboxEmail)
+// $replyToEmail = "";                   // Reply-to email address included in confirmation emails (optional, defaults to $mailboxEmail)
+// $siteDomain = "";                     // Domain name of your site (optional, defaults to the hostname)
+// $siteName = "";                       // Name of your site (optional, defaults to $siteDomain capitalized with the TLD removed)
\ No newline at end of file
diff --git a/src/email-handler.php b/src/email-handler.php
new file mode 100644
index 0000000..6d40720
--- /dev/null
+++ b/src/email-handler.php
@@ -0,0 +1,73 @@
+<?php
+require_once __DIR__ . "/email-config.php";
+
+header('Content-Type: application/json');
+
+// Function to send a JSON error response
+function jsonErrorResponse($message = "An error occurred. Please try again later.", $code = 500) {
+    http_response_code($code);
+    echo json_encode(['status' => 'error', 'message' => $message]);
+    exit;
+}
+
+// Function to validate that an email variable is set and properly formatted
+function validateEmailVar($emailVar) {
+    if (!isset($emailVar) || empty($emailVar) || !filter_var($emailVar, FILTER_VALIDATE_EMAIL)) {
+        jsonErrorResponse("Error: Server configuration error.", 500);
+    }
+}
+
+// Function to set a default email if the email variable is not set or is empty
+function setDefaultEmailIfEmpty(&$emailVar, $defaultEmail) {
+    if (!isset($emailVar) || empty($emailVar)) {
+        $emailVar = $defaultEmail;
+    }
+}
+
+// Validate email variables
+validateEmailVar($mailboxEmail);
+setDefaultEmailIfEmpty($fromEmail, $mailboxEmail);
+validateEmailVar($fromEmail);
+setDefaultEmailIfEmpty($replyToEmail, $mailboxEmail);
+validateEmailVar($replyToEmail);
+
+// Set defaults for $siteDomain and $siteName if they are not set
+if (!isset($siteDomain) || empty($siteDomain)) {
+    $siteDomain = $_SERVER['HTTP_HOST'];
+}
+if (!isset($siteName) || empty($siteName)) {
+    $siteName = ucfirst(explode('.', $siteDomain)[0]);
+}
+
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    jsonErrorResponse("Error: Method not allowed", 405);
+}
+
+// Sanitize user inputs
+$email = filter_var($_POST["email"] ?? "", FILTER_SANITIZE_EMAIL);
+$message = htmlspecialchars($_POST["message"] ?? "");
+$name = htmlspecialchars($_POST["name"] ?? "somebody");
+
+if (empty($email) || empty($message)) {
+    jsonErrorResponse("Error: Missing required fields.", 422);
+}
+
+if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+    jsonErrorResponse("Error: Invalid email address.", 422);
+}
+
+// Prepare and send the main email to the mailbox
+$headers = "From: {$siteName} <{$fromEmail}>\r\nReply-To: $email";
+$body = "From: {$name} ({$email})\n\nMessage:\n" . wordwrap($message, 70);
+$messageSent = mail($mailboxEmail, "Message from {$name} via {$siteDomain}", $body, $headers);
+
+if (!$messageSent) {
+    jsonErrorResponse("Failed to send the message. Please try again later.", 500);
+}
+
+// Prepare and send the confirmation email to the sender
+$headers = "From: {$siteName} <{$fromEmail}>\r\nReply-To: $replyToEmail";
+$confirmationMessage = "Dear {$name} ({$email}),\n\nYour message (shown below) has been received. We will get back to you as soon as possible.\n\nSincerely,\n{$siteName}\n\nPlease note: This message was sent to the email address provided in our contact form. If you did not enter your email, please disregard this message.\n\nYour message:\n" . wordwrap($message, 70);
+mail($email, "Your message to {$siteName} has been received", $confirmationMessage, $headers);
+
+echo json_encode(['status' => 'success']);