diff --git a/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml b/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml
index 1bcc2785..6f0a641d 100644
--- a/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml
+++ b/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml
@@ -130,7 +130,10 @@
                     </div>
                     <div class="input-group">
                         <span class="input-group-text">Gültig bis</span>
-                        <input type="date" name="expiration" class="form-control" id="readonly-date-valid">
+                        <input type="date" name="expiration" class="form-control" id="readonly-date-valid"
+                        min="@DateTime.Today.AddDays(1).ToString("yyyy-MM-dd")"
+                        max="@DateTime.Today.AddDays(90).ToString("yyyy-MM-dd")"
+                        value="@DateTime.Today.AddDays(7).ToString("yyyy-MM-dd")">
                     </div>
                 </div>
                 <div class="modal-footer">
@@ -150,11 +153,6 @@
 {
 <script nonce="@nonce">
 
-    const dateInput = document.getElementById('readonly-date-valid');
-    const today = new Date();
-    const threeDaysFromNow = new Date(today.setDate(today.getDate() + 3)).toISOString().split('T')[0];
-    dateInput.value = threeDaysFromNow;
-
     document.getElementById('readonly-send').addEventListener('click', async () => {
         const receiverMail = document.getElementById('readonly-receiver-mail');
         const dateValid = document.getElementById('readonly-date-valid');