diff --git a/server.py b/server.py
index 3c41068..6d3f732 100644
--- a/server.py
+++ b/server.py
@@ -40,10 +40,11 @@ def sanitize_filename(filename):
 
 def parse_form(form):
     """
-    Parses the form data to extract the message, recipient, and attachments.
+    Parses the form data to extract the message, recipient, reference, and attachments.
     """
     text = form['message']
     recipient = form['recipient']
+    reference = form.get('reference', '')
 
     all_attachments = []
     for i in range(Config.NUMBER_OF_ATTACHMENTS):
@@ -53,7 +54,7 @@ def parse_form(form):
             continue
         sanitized_filename = sanitize_filename(filename)
         all_attachments.append((sanitized_filename, attachment))
-    return text, recipient, all_attachments
+    return text, recipient, reference, all_attachments
 
 def valid_recipient(recipient):
     """
@@ -72,15 +73,19 @@ def get_identifier(recipient, now=None, randint=None):
         randint = Random().randint(1000, 9999)
     return f'{recipient}:{now.strftime("%Y:%m:%d:%H:%M:%S")}:{randint}'
 
-def create_email(to_email, identifier, text, all_attachments):
+def create_email(to_email, identifier, text, all_attachments, reference=''):
     """
     Creates an email message with attachments.
     """
     plain_text = text.replace('<br />', '\n')
+    subject = f'Secure Form Submission {identifier}'
+    if reference:
+        subject = f'{reference} {subject}'
+    
     message = Mail(
        from_email=FROMEMAIL,
        to_emails=to_email,
-       subject=f'Secure Form Submission {identifier}',
+       subject=subject,
        plain_text_content=plain_text)
 
     for item in all_attachments:
@@ -156,6 +161,7 @@ def submit():
         # Extract fields from JSON data
         message = data['message']
         recipient = data['recipient']
+        reference = data.get('reference', '')
         files = data['files']
 
         if not message:
@@ -173,9 +179,11 @@ def submit():
         identifier = get_identifier(recipient)
 
         log_data = f"{date} - message to: {recipient}, identifier: {identifier}, length: {message_length}, file count: {file_count}"
+        if reference:
+            log_data += f", reference: {reference}"
         logging.info(log_data)
 
-        message = create_email(to_email, identifier, message, files)
+        message = create_email(to_email, identifier, message, files, reference)
 
         if Config.DEBUG_MODE:
             print(f"Attempt to send email to {to_email}")
diff --git a/static/js/app.js b/static/js/app.js
index f58bdd8..36e0706 100644
--- a/static/js/app.js
+++ b/static/js/app.js
@@ -87,9 +87,11 @@ function acceptEncryptedData(data) {
 		console.log('all chunks received, submitting form');
 		const gRecaptchaBlock = document.getElementById('gRecaptcha');
 		const recipient = document.getElementById("recipientSelect");
+		const reference = document.getElementById("reference");
 
 		dataArray['g-recaptcha-response'] = gRecaptchaBlock ? grecaptcha.getResponse() : null;
 		dataArray['recipient'] = recipient.value;
+		dataArray['reference'] = reference.value;
 
 		postData('/submit-encrypted-data', dataArray)
 		.then(response => {
@@ -216,4 +218,4 @@ function displayResult(status, message) {
 	const formElement = document.getElementById("submission-form");
 	const statusText = (status == "success") ? "Success!" : "Error";
 	formElement.innerHTML = `<fieldset><legend>${statusText}</legend><span class='pure-form-message'>${message}</span><br><br><span class='pure-form-message'><a href="#" onclick="location.reload()">Send one more submission</a></span></fieldset>`
-}
\ No newline at end of file
+}
diff --git a/templates/index.html b/templates/index.html
index 2a6b572..d04b8e7 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -26,6 +26,9 @@
 				{% if 0 %}<option value="oleh">Oleh</option>{% endif %}
 			</select>
 			<br>
+			<label id="referenceLabel" for="reference">Reference (optional):</label>
+			<input id="reference" name="reference" type="text" placeholder="Example: FY24-XXXX">
+			<br>
 			<label id="messageLabel" for="text">Message:</label>
 			<textarea id="text" name="text" type="text" placeholder="Write a message. Please mention your name or email and short description of the file contents."></textarea>
 			<br>