diff --git a/EnvelopeGenerator.Web/Controllers/HomeController.cs b/EnvelopeGenerator.Web/Controllers/HomeController.cs
index b5b03111..b2419641 100644
--- a/EnvelopeGenerator.Web/Controllers/HomeController.cs
+++ b/EnvelopeGenerator.Web/Controllers/HomeController.cs
@@ -44,11 +44,21 @@ namespace EnvelopeGenerator.Web.Controllers
 		}
         
         [HttpGet("EnvelopeKey/{envelopeReceiverId}")]
-        public async Task<IActionResult> SendAccessCode([FromRoute] string envelopeReceiverId)
+        public async Task<IActionResult> MainAsync([FromRoute] string envelopeReceiverId)
         {
             try
             {
                 envelopeReceiverId = _urlEncoder.Encode(envelopeReceiverId);
+
+                if (!envelopeReceiverId.TryDecode(out var decoded))
+                {
+                    Response.StatusCode = StatusCodes.Status401Unauthorized;
+                    return this.ViewDocumentNotFound();
+                }
+
+                if(decoded.GetEncodeType() == EncodeType.ReadOnly)
+                    return Redirect($"{envelopeReceiverId}/ReadOnly");
+
                 ViewData["EnvelopeKey"] = envelopeReceiverId;
 
                 return await _envRcvService.ReadByEnvelopeReceiverIdAsync(envelopeReceiverId: envelopeReceiverId).ThenAsync<EnvelopeReceiverDto, IActionResult>(